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A potentially good idea got corrupted by vendors, password managers, browsers, etc trying to assert control. I'm also an engineer and I find the UI around passkeys entirely unclear, but it doesn't have to be that way. It seems like everyone wants to be _the_ password manager for all your passkeys. They don't want to make it easy to understand that is what they are doing though, they just happily offer to "handle it for you".

My non-technical friends are extremely confused by passkeys and if they should use them and how to use them and I honestly don't have very good answers. It is a mess. I don't believe an inherit mess, but one created by the companies and projects trying to take advantage of the new system.

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> It seems like everyone wants to be _the_ password manager for all your passkeys.

Which defeats part of the point of passkeys in the first place in that they are supposed to be device-bound, the private key held in the TPM or secure enclave or whatever other security chip, mathematically non-exportable. Storing all your private keys in a cloud vault still leaves you exposed to potential credential theft if your vault gets compromised.

Every device is supposed to have its own unique private key, stored in TPM, released only when passing the user challenge (biometrics or pin, or a yubikey).

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> Which defeats part of the point of passkeys in the first place in that they are supposed to be device-bound

If you watch the original Apple WWDC talk presenting passkeys, you will find that they were always intended to sync, at least for the consumer use-case.

What you are describing is how the WebAuthn standard had been implemented by Yubico and Google up until the point of the introduction of “passkeys” by Apple.

The reason passkeys have their own name and definition is because they are meant to be a phishing-resistant primary factor that competes with the UX of passwords. And a great usability trait of passwords is that they’re convenient to use across all your devices. With a technology involving public/private keypairs, the only possible way to compete with that UX is to sync the private key across the user’s devices.

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> the only possible way to compete with that UX is to sync the private key across the user’s devices

This is my issue with passkeys. Either we lessen security to improve UX (syncing across devices implies extracting private keys from secure enclaves, at which point it’s no different to password syncing), or we have a proliferation of different keys per website across devices (assuming the website supports multiple passkeys).

Perhaps this trade off is not resolvable in a way that happily satisfies both the security constraint and the UX requirement.

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  > Every device is supposed to have its own unique private key, stored in TPM, released only when passing the user challenge (biometrics or pin, or a yubikey).
I have just shy of 2000 site credentials in Keepass. Let's assume that they were all Passkeys.

1) When I buy a new device, how do I create 2000 new Passkeys for that device?

2) Can I still do that if I don't have access to the old device? Maybe it was destroyed, stolen, or lost.

3) How about if the new device is from a different vendor than the original device? E.g. switching from Apple to Android?

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Passkey comprises of public key that the website you created it on holds, and the private key you store on your pw manager or in the TPM/secure element. As long as you can copy the private key to the new device, you don't need to recreate the whole passkey. In your case, you would just need access to a backup of the Keepass database in case you lose the device.

The biggest point of confusion in my opinion comes from Windows especially having lacked a way (and kind of still does) to save the private key of a passkey to your password manager, defaulting to saving it to Windows Hello, which saves the private key to your PC's TPM. In this scenario you can no longer easily copy the private key to other devices, and if you lose that Windows PC, you also lose the private key and the whole passkey as a result.

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People who say users should not be able to export keys are not confused. They believe users should not be able to export keys.
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Apple's keychain or google password manager - can hold 2000 passkeys easily.
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Nothing in the post you're replying to is about "is 2000 passkeys storable", it's about "if I have 2000 passkeys and I need to move between an Apple device and an Android device, do I need to establish a second set of 2000 passkeys"?
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Did you not read the comment thread you're responding to?
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Dunno why the downvotes, if you're willing to trust Apple or Google this is a good method for passkey usage. because your touchID/faceid/opticalid auth gate the keyring's on either of these vendors your passkey works without having to migrate them. EDIT: Also ANY device that you add to your iCloud has access to the passkeys you've made... it's a dream for secure access.
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The downvotes are because the commenter did not read or at least did not fully comprehend the meaning of the post they were responding to.
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In the Apple ecosystem, passkeys are stored in your iCloud, and access to the passkeys is device bound. So if I generate a passkey on a MacBook, I can then use it from my iPhone as well, because it's encrypted to all my hardware devices.
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Right; but THAT idea is consumer hostile by design.

So your account is now tied to a physical device; great, but the device is dead, or you own a dozen devices, now what? Each vendor has their own idea about what THIS means. Heck I have a couple that allow, max, a single Passkey at a time.

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> Right; but THAT idea is consumer hostile by design.

No argument from me there, just stating what the design actually calls for.

It was never meant to be consumer friendly in the first place, it's an enterprise standard. It was just shoehorned onto consumers with the synced credential compromise to make it easier, instead of coming up with something better, and then just calling it a "Passkey" which now has dual meaning.

But the real solve is difficult. If a system requires a consumer user to manage, remember, or safely store something extra, it will fail.

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The FIDO set of standards (UAF, U2F which predated passwords and passkeys) haven't even started as enterprise standards. There are multiple origins for what became FIDO, but the main ones I know are:

1. PayPal was looking for a physical authentication solution for their users, Michael Barrett was their CISO at that point and he became the president of FIDO.

2. Google developed Gnubby (which was internal, and therefore enterprise) and they wanted to push a similar authentication to their end-users, supported directly on Chrome. They wanted this to become a standards, so donated the underpinnings of the Gnubby technology which became FIDO U2F.

I might be wrong but at least these are the two parts I know.

And while the original FIDO could be called dual-use, Webauthn and especially Passkeys were developed to be first and foremost a customer-facing standard.

It doesn't mean they are not confusing, but they are clearly designed with end users in mind.

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Wouldn’t it be better to use envelope encryption and sync the passkeys? I mean with envelope encryption somebody would probably be able to create a rfc that would support cross browser/password manager sync a passkey by using a encrypted envelope that would be able to be deceptively wither via tpm or by using credentials so when syncing it would ask for upn/password of the original device or something so it can even be e2e encrypted, so some kind of federation protocol for password managers that you own
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> Every device is supposed to have its own unique private key, stored in TPM, released only when passing the user challenge (biometrics or pin, or a yubikey).

This is a misconception. A particular service can choose to enforce those class of passkeys, but most don't need that and shouldn't.

Passkeys are primarily meant to replace passwords and be hard (but not necessarily impossible) to exfiltrate.

The key difference is during normal usage you don't have to type the secret in anywhere, it's strictly asymmetric, so a unwitting user is far less likely to get fooled into accidentally leaking the actual credential.

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> Passkeys are primarily meant to replace passwords

Unfortunately, the designers of passkeys decided they should replace passwords and usernames and second factors.

Also they decided they should be cloud-synchronised, so the something-you-have second factor doesn't impose the burdensome requirement for you to have something, which was apparently a big usability problem.

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Passkeys is basically a brand name for "discoverable credentials" (a Webauthn term). They do a little more than that technically, but in practice their purpose is what you said. Replace passwords. Or more accurately usernames and password pairs. This is in contrast from 2FA, but even before Apple started marketing Passkeys the FIDO standard supported the concept of Passwordless authentication, alongside 2FA.

Passkeys came together with multi-device syncing when Apple introduced them and IIRC it was pushed as their killer feature by Apple back then, but passkeys can also be completely device-bound. The marketing around this was all quite confusing, but it's a bit too late to fix now.

What we got, as far as the average consumer should be concerned, is that "passkey" is any authentication mechanism (not the actual credential) that can replace a password. And it's still confusing.

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Seems like the flow should be:

1. All passwords stored in password manager. 2. Login with password manager when logging in for the first time on a device. 3. Combination of OS and site/app notice that no passkey has been created for this account and offers to create one. This is presented to the user as “setting up the current device for password-less log ins.” 4. OS negotiates with site/app to install the passkey and use it for future log ins on the device.

It’s presented to the user as a convenience clearly tied to this device.

…but you still have your text password stored in the password manager’s servers…

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By still having the password the user can still be attacked via phishing
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This is exactly all the stuff normal people don't care about.

If your system requires any basic intelligence or interest scrap it and go back to the drawing board because you just lost your customers.

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Stronger than "don't care about" (at least if I and some friends I've discussed this with count as normal people): this is actively what I don't want! I want control over my authentication and I don't want it bound to device, browser, OS, etc.
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I mean, no one ever said it was a good design.

But the original FIDO2 standard wasn't made with consumers in mind in the first place, it was driven by enterprises that wanted high-assurance security. It works in that environment because, well, a big IT department controls it, can support the employees, and you can mandate and control its use.

It was just sort of haphazardly shoehorned onto general users/consumers, prematurely IMO, via synced credentials as a compromise instead of coming up with something better.

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I do not want my identity to be device-bound. I want it to be me-bound.
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Device-bound would be a nightmare. I don’t want to have to think about different credential for phone vs. laptop, etc.
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This is much, much simpler than you think it is. Passkeys are just passwords that require a password manager. If you lose your passkey, you'll reset your passkey the same way you reset your password, probably with a "forgot my password" email.

(But you're not going to lose it, because you use a password manager, and the passkey will be stored there and synchronized to all of your other devices.)

The weird part is that password managers provide no way for you to copy and paste your passkeys. To present a passkey, you have to use a password manager. This makes it impossible to copy and paste your passkey to the wrong person (someone trying to trick you).

Major password managers don’t even allow you to export your passkeys to a file that you can read/backup yourself. Instead, the password managers each have their own finicky app-to-app mechanism for transferring passkeys from one password manager to another. (I think all the password managers kinda like that lock in.)

Finally, note that for logging into your password manager itself, you'll always require something outside your password manager to login, probably a password, but possibly a YubiKey; your choice. (It's your one "last password," as they call it.)

https://danfabulich.medium.com/passkeys-are-just-passwords-t...

P.S. It's past time to move off of LastPass. LastPass lost all of your passwords again last month, just like they did in 2022. The most similar service is 1Password. If you like LastPass, you'll like 1Password about the same, but 1Password hasn't had multiple terrible security breaches.

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>This is much, much simpler than you think it is. Passkeys are just passwords that require a password manager.

The issue isn't what passkeys _are_ (e.g. explaining they are like public/private "ssh keys" and hoping that type of explanation ends the confusion).

Instead, it's the workflow around passkeys. The websites show very confusing dialog popups and choices that a lot of normal people will not understand. This is a good article with screenshots showing the confusion: https://arstechnica.com/security/2024/12/passkey-technology-...

I have senior citizens asking me about passkeys because their bank and medical websites keep reminding them about switching to passkeys every time they login into their accounts. My recommendation to them is not to do it unless they have a simplistic single vendor setup such as only Apple iPhone and MacBook with iCloud Passwords app. If instead they have a mixed Windows + Apple setup with 3rd-party password manager, they could accidentally put a new passkey into the os or browser instead of their external password manager and not realize what has happened. This happens because the different parties implementing passkeys all have different agendas that suits their interests and that's what makes the workflow confusing for normal people.

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The what and why make sense. The how is poorly done. People are generally familiar with passwords but passkeys are different.
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sadly it seems like most of the banks I use still enforce antiquated password rules, no MFA and rely on stupid questions most of which can easily be guessed from public records.
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Just the other day I was creating an ID on a government web site, which offered a list of security questions such as "Title of your favorite movie" or "Someone that you admired as a child" and the answer was not allowed to have any spaces.

Just absurd.

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You can also just put any answer into the question as long as you will remember it.
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It should work for all people and not depend on these “tricks”.
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So you're saying that if you're inside Apple's walled garden, it works really well! Hmm...
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> So you're saying that if you're inside Apple's walled garden, it works really well! Hmm...

Or google. If you use android and chrome then it all just works.

But god help you if you want to use a password manager to keep everything in sync; I haven't yet found a way for a mobile app or web page to explicitly signal to the device that the passkey to be created should live in $password_manager and not whatever built-in/on-device key-store exists.

So I only really use pass keys for desktop/web things because that's the only place the "store/read from $password_manager" flow _works_.

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It's probably not something the app or web page should have any visibility or control over. It's more something the browsers and OS should allow a straightforward selection of where you want your passkeys stored (ideally something you can configure the default for globally). But of course the OS and browser vendors are trying to compete to do it, so they're not incentivised to make it obvious or fair.
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>I haven't yet found a way for a mobile app or web page to explicitly signal to the device that the passkey to be created should live in $password_manager and not whatever built-in/on-device key-store exists.

On Android 17 (on Pixel) you can select the password service under Settings -> Passwords and passkeys -> Preferred service.

If you have an alternative password manager installed, it will be listed there along with Google's own password manager. iOS has a similar setting but I don't know exactly where off the top of my head.

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> On Android 17 (on Pixel) you can select the password service under Settings -> Passwords and passkeys -> Preferred service.

I have this set to my password manager but I still can't _use_ the pass-keys in my password manager to sign in to most apps.

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"Most" apps? So it works in some apps, but not others?

Setting your preferred password/passkey manager on Android 17 to 1Password works fine in Chrome and Firefox to log in to any site, presenting passkeys managed in 1Password. It also works in all of Meta's native apps. (I'm pretty sure it works the same in Bitwarden.)

Whatever issue you're having, it's not an inherent limitation of Android passkeys. It might be a bug in your passkey manager…?

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Works fine on iOS. All my passkeys are in 1Password, and every prompt to use or save a passkey goes through 1P. You can also control which password managers are active on iOS (eg, I disable iCloud passwords, and only allow “autofill from” 1Password.)

So yeah, this is cross platform on iOS, macOS, Windows, and Linux.

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You're agreeing precisely with the parent commenter that passkeys are, from a user's perspective, just passwords that require the use of a password manager. The difficulties many people have understanding or using passkeys are valid to point out and criticize, but they're precisely the same difficulties people have moving from the paradigm of "memorizing or writing down all my passwords" to "using a password manager."
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I don't think you're giving those seniors good advice. When the banks ask people to "switch" to passkeys, they're not removing the passwords; they're adding passkeys as an alternate login mechanism.

If you lose your bank passkey, (e.g. if you put it in the wrong password manager and you can't figure out where it is) you can just sign in with your bank password.

In the worst case, banks actually don't make it very hard for seniors to reset your password/passkey; just show up at a branch with photo ID, your bank card, and your PIN, and a teller will help you reset your credentials. They do it all the time.

And, remember, seniors could also put a randomly generated password into the wrong password manager. In that case, they'll either have to reset their password, or they'll have figure out what they did, retrieve their password from the OS password manager, and transfer that password to their preferred password manager.

The exact same story applies to passkeys, except, because passkeys can't be copied and pasted, you'd have to figure out how to use the finicky app-to-app transfer system ("Credential Exchange Protocol"). That's probably too complicated for most seniors, so falling back to a password is almost certainly their best bet.

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> In the worst case, banks actually don't make it very hard for seniors to reset your password/passkey; just show up at a branch with photo ID, your bank card, and your PIN, and a teller will help you reset your credentials. They do it all the time.

Maybe... I just ran into an annoying scenario where the largest bank in Canada made an administrative error where they mislinked an account belonging to me to my wife's profile.

I went to a physical branch to get it fixed and was told that branches don't have that kind of ability so I'd have to call customer support.

I called customer support and failed the verification questions because the expected answers were wrong, based on their own clerical error. After failing the verification questions, I just got a "we have to end this call, no additional information can be provided, please visit a branch."

I was able to get around it by calling back in and providing the incorrect, but expected answers to pass the verification step - I imagine, however, that this could have turned into a real nightmare for seniors, or anyone who wasn't able to deduce what the expected verification answers were.

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This is more a statement of how awful Canadian banks are than anything else. For anyone unaware we have an oligopoly of five identical banks all of which treat their customers like shit and effectively extract tax from the Canadian population while providing nothing.
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Ironic given the prime minister's former employment
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> while providing nothing.

You forgot about the endless frustration and annoyance.

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> I went to a physical branch to get it fixed and was told that branches don't have that kind of ability so I'd have to call customer support.

What are the branches even for if not customer support?

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> What are the branches even for if not customer support?

Lots of physical locations make the bank seem big/safe/reputable.

Beyond that, it's sales and a place to have ATMs. I have sometimes been able to get a replacement card issued at a branch instead of waiting for one to show up in the mail.

Some branches will accommodate special requests like "can I withdraw $200... in two dollar bills" / take coin deposits but that's been increasingly rare.

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My local branch has had a sign on the front door "our coin counter is broken, sorry for the inconvenience" for the past 6 months. I refuse to believe they don't have a working coin counter in a bank branch; they just don't want customers bringing in a big jars of coins.
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I didnt even realize you could do that - I just assumed you still had to roll your own coins or use a service like Coin Star
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A meeting space to discuss business services, and a terminal for people who insist on depositing cash. They are definitely not a customer support terminal.
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> just show up at a branch

In the UK at least, there are very few brick & mortar branches anymore - banks expect everything to be done online.

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Uh, if you set up a passkey it becomes the default almost always. Then on another device it'll pop up looking for it and look like login failure and you need to "try another way". That's alarming to anyone, not to mention seniors.
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Sure, that's alarming, but if you set up a passkey on the "wrong" password manager, you've (temporarily) lost your passkey. You should probably be kinda alarmed about that.

You can click "try another way" and use your password, and then you'll have access to your bank. But then, you should try to resolve that problem. If you (or a trusted friend/family member) can figure out how to use settings to remove the passkey from your bank's account settings, you can do that, or you can ask a bank teller to help you, instead.

(And, luckily, you won't need a bank teller, because you'll still have access to your account.)

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> you can ask a bank teller to help you

At virtually all banks, the bank tellers cannot help you with login problems. You will have to call the bank's tech support and somehow navigate AI-modulated phone menu hell.

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Citation needed. Walk in with photo ID, a bank card, and your PIN, and all the major banks will send you a reset-password email.
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I went to my bank with all my ID and my bank card, talked to the teller and was told to call a support line. One of my parents went through the same thing.

I don't have a citation for you just recent experience, do you have a citation?

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Switch to a better bank.

My credit union has people who can help with any online banking/website login issues. They aren't tellers, but they are there. You just need to ask to speak to a customer service rep.

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I help run a non-profit and the only time I have ever been able to get this kind of service is when I visit a bank that has in-person business services. Tellers do not have any ability to do any of this.
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Even my primary Credit Union is limiting teller roles in branches. There are still people to help, but then you have to go in person. My nearest branch is a day trip away but I can do most banking tasks at any partner CU location.
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I am an engineer and have some insights on the discussions and developments around it.

ITS NOT SIMPLE AT ALL

1. The idea was to provide a phishing resistant authentication method for enterprise users (companies loose quite a lot of money to phishing).

2. Majority of industry players shared the vision of a credential which is available across the platforms and browsers

3. The vision for collaboration never materialized so everyone went their own way to implement it. Examples would be google rolling out browser (Chrome) managed authentication which led to this situation where even on the same machine you have to remember which browser you used to create the Passkey credential.

4. Interestingly enough the earlier popular name was WebAuthn, Apple started calling it Passkey on fly, given Apple's popularity everyone just caved in.

5. My personal interpretation is that in some sense Apple wanted to be the default password manager on Apple devices.

6. This is when all password manager companies jumped in strongly to save their business and the protocol went into a direction where you can use your existing password manager to store the credential/Passkey as well

Personally its a mess, the phishing resistant aspect has its own benefits though. If you are using it with security in mind then my recommendation would be to use a hardware backed security key with NFC enabled. Everything else is pretty much lipstick on pig, they are worse than passwords in some sense from usage perspective.

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Yes, this is exactly the problem.

Multiple pieces of software vying to be your passkey provider, often using dark patterns so you don’t realize you’re making a choice, and not using the term “passkey” so people are using the technology without knowing what it is or how to research it.

Kind of reflects the state of the web today, where every company wants to be your intermediary in every interaction, from making a purchase to transcribing a meeting.

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> Multiple pieces of software vying to be your passkey provider,

Which entirely defeats the point of using passkeys. There shouldn't be a passkey provider the "provider" is your device's TPM/secure enclave + your biometric challenge. They are supposed to be mathematically non-exportable, device-bound.

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"supposed" is doing a lot of heavy-lifting here. According to who? The FIDO2 or Webauthn standards? Or in a perfect world?

FIDO 1.0 started as two different standards: UAF and U2F. U2F was for USB keys used as second factors (so almost always stored in a TPM-like chip and device-bound, but not provided by your platform and there could be multiple of them). UAF were either provided by your platform or by any software and there was no requirement for them to be stored in TPM. Back in the day, very few platform had any FIDO support built-in, so in practice UAF was always done in software (usually based on whatever biometrics/TPM the hardware provided).

So competing options were the default for early FIDO, getting a default platform option is something that came later.

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The anti-phising benefits are still very much there even if you sync them to pw manager. Yes it introduces single point of failure (pw manager), but at the same time you no longer need to go reset all your passwords to every service you use if you happen to lose that device. Tradeoffs.
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> They are supposed to be mathematically non-exportable, device-bound.

Which would make the whole scheme unworkable (at least for me).

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I pair of hardware keys (Token2, Yubico, etc) has the benefits from both worlds.
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Yeah - and as a user, I don't want my device manufacturer to have that level of influence or control over the authentication that I use for unrelated services.
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I don’t see hardware tokens (like Yubikey) in the list. Those are the only ones that provide a true second factor, to protect against the theft or compromise of your primary device.

I’m a little afraid that hardware tokens are getting lost in all the passkey marketing BS. At least they continue to work for now.

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> I don’t see hardware tokens (like Yubikey) in the list. Those are the only ones that provide a true second factor

passkeys are not meant to be a second factor; they are meant to replace the password as a primary factor.

>to protect against the theft or compromise of your primary device.

I love Yubikeys, but the only additional protection you get by making the passkey hardware-bound is preventing an attacker who has already compromised your operating system from stealing the credential.

But! Unless you are also doing hardware binding of the session (aka cookie) after sign-in, then doing hardware binding of your credential is mostly security theater, because the attacker can just wait for you to sign in and then steal your session.

And there is standards work happening separately for hardening session security, such as DBSC: https://w3c.github.io/webappsec-dbsc/

I have no idea if Yubico is involved with DBSC, but I would hope that they are, because it would help them make Yubikeys live up to the security guarantees that I personally feel are heavily implied by their marketing.

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There are some parts of this that are correct and other parts that are incorrect:

>1. The idea was to provide a phishing resistant authentication method for enterprise users (companies loose quite a lot of money to phishing).

This is incorrect. The idea was to provide a phishing resistant primary factor that could compete with the usability of passwords to the point that consumers would actually want to adopt it.

>2. Majority of industry players shared the vision of a credential which is available across the platforms and browsers

This is correct/accurate.

> 3. The vision for collaboration never materialized so everyone went their own way to implement it. Examples would be google rolling out browser (Chrome) managed authentication which led to this situation where even on the same machine you have to remember which browser you used to create the Passkey credential.

IIRC at least Chrome's default on Apple platforms is to save to the Passwords app by default. There are then multiple fallback options in the case that the user isn't using the default credential provider -- ultimately falling back all the way to cross-device passkey sign-in (the QR-code initiated sign in) or Security Key.

The security engineering behind the QR-code cross-device sign-in stuff is interesting: https://www.corbado.com/blog/webauthn-passkey-qr-code#4-pass...

That said, I strongly agree that fragmentation of where passkeys get saved is super confusing and I wish there:

(a) was stronger guidance from the FIDO alliance on both educating users that it's totally fine to have multiple passkeys across different ecosystems (e.g. one in Apple, one in Google), and;

(b) that all the credential managers could figure out a better way to place nice together and make it super clear to the end-user where a passkey is getting stored, what context it's for (e.g. personal vs. work), and actively help them store it in the right place (which might be different credential manager app for personal vs. work!).

> 4. Interestingly enough the earlier popular name was WebAuthn, Apple started calling it Passkey on fly, given Apple's popularity everyone just caved in.

This is incorrect -- passkeys are not just another name for WebAuthn. If you go back and look at the original definition Apple gave for the word passkey, you'll find that it was meant to be a discoverable WebAuthn credential that syncs across a user's devices with end-to-end encryption. There was a bunch of industry thrash around the definition, but it seems like the original Apple definition has largely stuck/settled now, and when passkeys don't sync they're typically called "device-bound passkeys" rather than just "passkeys".

>5. My personal interpretation is that in some sense Apple wanted to be the default password manager on Apple devices.

If you go back and watch the original passkeys announcement from Apple, their stated goal was to create something that is both a better user experience and more secure than passwords. By "better user experience", they meant the act of creating credentials and then repeatedly using those credentials (logging in).

Part of actually achieving that goal means there needs to be something that "just works automatically out of the box" which means there needs to be a built-in credential manager. That said, Apple credential manager had already existed for many many years by the time passkeys came around. The only thing that changed was instead of being solely accessible from inside System Settings (which was hard for the average user to find), the functionality moved into a standalone Passwords app.

>6. This is when all password manager companies jumped in strongly to save their business and the protocol went into a direction where you can use your existing password manager to store the credential/Passkey as well

I think it's a huge positive that all the password managers jumped on board, and that they could jump on board (since WebAuthn is an open standard). I think this is a good thing for consumer choice and for overall adoption and perception of passkeys. A lot of folks (including on this thread) have big tech lock-in conspiracy theories about passkeys, and the conspiracy theories would be even more prevalent without a wide spectrum of consumer choice for credential managers.

>If you are using it with security in mind then my recommendation would be to use a hardware backed security key with NFC enabled. Everything else is pretty much lipstick on pig, they are worse than passwords in some sense from usage perspective.

Passkeys protect against phishing attacks, and you get that protection regardless of whether the credential is hardware-bound or not. That protection comes from the cryptographic binding of the credential to the domain at the time of credential creation.

The only additional protection you get by making the passkey hardware-bound is preventing an attacker who has already compromised your operating system from stealing the credential. But! Unless you are also doing hardware binding of the session (aka cookie) after sign-in, then doing hardware binding of your credential is mostly security theater, because the attacker can just wait for you to sign in and then steal your session.

And there is standards work happening separately for hardening session security, such as DBSC: https://w3c.github.io/webappsec-dbsc/

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I try to be accurate when sharing information like this. Some things are fact and some things are opinions, I already tried to annotate the opinions as interpretation. Most of the information is first hand, I was a member of FIDO alliance in past, have been watching these discussions.

1. This can be subjective, Unfortunately Customer identity is not on the highest priority from security perspective, its all about ease of product use when it comes to customer identity. For customer identity, most account recovery methods still fall back to email or SMS even if you have 2FA configured. The real money lost with phishing is with enterprise identity, when some one poses as an employee. The recovery of these accounts can be managed. If a customer account gets hacked then the business is not really on the hook to make it even.

> Usability of passwords

This is the biggest point of contention as per my interpretation. The industry did a very poor job of securing their infrastructure leading the massive leaks of password databases. Instead of fixing that goal post changed, with the by introduction of PASSWORDLESS. The passwordless works just fine for enterprise identities, not the customer identity. Even for enterprises, you cannot get rid of passwords if you get into AAL concepts (guidelines provided by NIST for authenticator assurance levels)

4. I was working on WebAuthn when the term passkey was not there, I was there when the term was introduced, I saw how every one was trying to map their existing definition/understnading with the new terminology specially the part where Apple just announced them to be syncable. Enterprise companies had to actually disable the Apple Passkeys for this reason to begin with. I found it interesting to see how Yubico changed their documentation overnight, they switched every instance of WebAuthn keyword with Passkey. It took some time to settle on how to categorize discoverable credentials (where meta information about user is on the device in addition to credential) and non-discoverable credentials (hardware keys, they are limited in space so they did not store user meta information in earlier versions). Eventually google took the lead in calling the credential where private key cannot be synched as Security key and everything else as Passkey. Resident key, syncable, synched are all different bits of the WebAuthn assertion

5. Thats an interpretation of how I read things based on the overall play going on.

> Passkeys protect against phishing attacks, and you get that protection regardless of whether the credential is hardware-bound or not. That protection comes from the cryptographic binding of the credential to the domain at the time of credential creation.

The security aspect is tightly coupled with the authenticator implementation. The phishing aspect is the only default good in here, it just means that the credential is strictly tied to a particular domain, the one on which it was set, that too is highly dependent on the client (browser) doing the right thing. Additionally you have to count on the server to not get compromised as well (There is a a feature to support multiple domains).

Most importantly, when you make something this hard and complex to understand then be advised that people are going to make mistakes in implementation and leave gaps in security.

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WebAuthn is the standard for token authentication.

(I.e., Yubikeys and other USB sticks.)

It works fine and it a no-brainer to use.

The problems start when vendors start trying to shoehorn their shitty cloud auth services into WebAuthn.

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How well does that Yubikey work with an iPhone?
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Works great, they even have ones with USB on one side and Lightning on the other for older iPhones.
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Works just fine, you have to get the one with NFC
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You can also plug them in to the USB-C port, works just fine.
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Some functionality is not supported via USB-C. Namely HMAC Challenge does not work via usb-c but will work via lighting port.
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iPhones are a lost cause.
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Passkeys on my iPhone works awesome.

Too bad for Yubikey. I don't need them any more.

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It should have never been a cloud password manager play. It should be hardware device only, and tied to the device. One passkey on each hardware device.
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That leads to the cross-device usability issues from the original post. Even for an experienced engineer, it's a headache to manage multiple devices across multiple sites.

With the "cloud password manager" angle there is some hope of being user friendly, although we're certainly not there yet for most folks.

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Then most of us would never use it. That means either:

- Only one specific device can ever login (bad).

- It doesn't limit login to one specific device, therefore it does nothing.

Linking Passkeys to a physical device was always DoA. At least not without a way to enroll every device you own, and strong recovery strategies. But considering how inconsistent every company's Passkey implementation is (inc. many that only allow ONE TOTAL!), it is DoA.

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> Only one specific device can ever login

That's entirely service dependent, and the standard doesn't mandate "Service must not allow multiple passkeys"

> It doesn't limit login to one specific device, therefore it does nothing.

It's not nothing. It provides an attestation that you the user are in physical possession of the device, and have passed the challenge to release the key form the TPM (biometrics, pin, something like a yubikey).

Giving your private key to a cloud password vault makes it phishable again (via an attacker getting acsess to your vault, just like with passwords). The private keys are supposed to be non-exportable, and the cloud password managers defeat that as well.

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>> Only one specific device can ever login

> That's entirely service dependent, and the standard doesn't mandate "Service must not allow multiple passkeys"

Unfortunately, given the laziness, incompetence, and cost-consciousness of organizations like traditional financial institutions, telcos, governments, etc., many of them have & will end up with that implementation.

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Then I wouldn't use it, and I would probably stop using services that tried to push me in to it.

I use multiple devices and I want to log in to things using only my master password. I also want to be able to back up my credentials to local encrypted storage so I can restore them if my password manager service provider stops operating or becomes untenable.

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This is not much simpler than they think it is.

> But you're not going to lose it, because you use a password manager, and the passkey will be stored there and synchronized to all of your other devices

That's just wrong. I use android, my partner uses ios. If he creates the passkey in safari, it's not going to get synced over to my phone. And that's just the first of the family sharing passwords issues. Same person issue is also present if somebody uses an iphone and a windows laptop, or chromebook.

It doesn't help that all modern browsers eagerly try to step in and offer their implementation of passkeys for logins, and they're not featured enough to support the type of shared access or synced access many people would expect from a password manager. How useful is your firefox passwords on an iphone? Or Mac OS's keychain I use as a daily driver on my windows gaming desktop?

> Major password managers don’t even allow you to export your passkeys to a file that you can read/backup yourself

This is wrong. Every single major password manager supports export. Lastpass, 1password and bitwarden all do that.

> It's past time to move off of LastPass. LastPass lost all of your passwords again last month

That just isn't true. Last month, their third party customer support portal was breached. That did not involve passwords.

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> Every single major password manager supports export.

They all support exporting passwords, but, check your CSV; you won't find any passkeys in the CSV export for Apple, Google, Microsoft, Mozilla, 1Password, or LastPass.

(Bitwarden, Proton Pass, and KeepassXC do support exporting passkeys to CSV, which undermines the phishing protections, at least somewhat. It’s possible to trick you into exporting your passkeys from Bitwarden and sending the file to an attacker. It’s up to you to decide whether protecting yourself from being tricked into exporting your passkeys is worth sacrificing your ability to read them.)

> How useful is your firefox passwords on an iphone?

Did you try it? That's the primary feature of the Firefox app for iPhone.

(Especially since the Firefox app for iPhone is just Safari's WebKit wearing a Firefox disguise.)

> Or Mac OS's keychain I use as a daily driver on my windows gaming desktop?

https://apps.microsoft.com/detail/9pktq5699m62?hl=en-US&gl=U...

> With the iCloud for Windows app, you can access photos, files, passwords, and other important information from your iPhone or other Apple devices on your Windows PC.

When Apple's your password manager, you use Apple's password manager app to synchronize passwords and passkeys.

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> That's just wrong. I use android, my partner uses ios. If he creates the passkey in safari, it's not going to get synced over to my phone

It would, if the people implementing it weren't all so obsessed with pushing their own platform-specific solutions over enabling open standards. LastPass works fine on Android, iOS, Mac, and Windows, but each one of those platforms defaults to saving passkeys in their own platform-specific store unless you jump through hoops to specifically save them somewhere else.

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>That's just wrong. I use android, my partner uses ios. If he creates the passkey in safari,

There. You just violated the premise of his point, that you use a password manager that syncs to all your devices.

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> That's just wrong. I use android, my partner uses ios. If he creates the passkey in safari, it's not going to get synced over to my phone. And that's just the first of the family sharing passwords issues. Same person issue is also present if somebody uses an iphone and a windows laptop, or chromebook.

The passkeys sync just fine between iOS and Android on our devices using 1Password.

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> This is much, much simpler than you think it is. Passkeys are just passwords that require a password manager. If you lose your passkey, you'll reset your passkey the same way you reset your password, probably with a "forgot my password" email.

This is why I don't bother with these if they have a weaker workaround, which will be open to remote hacking.

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> Instead, the password managers each have their own finicky app-to-app mechanism for transferring passkeys from one password manager to another. (I think all the password managers kinda like that lock in.)

It's a nice simplifying step to talk about password managers here, but in the majority of the cases this won't be handled by a password manager, but rather by the device operating system, and the device manufacturers really like that lock in.

They're also in an especially good position to abuse it, because they now know every service that you authenticate and the webauthn "attestation object" field lets them set up a side channel with those services such that they can sell additional information about you.

Some people will tell you that the attestation object is not used in the consumer passkey system, so there's no way for this abuse to occur, but since it's usually going to be the device manufacturer who controls the password-manager-like component here, and they're the ones who stand to profit most from this kind of abuse, I think we need stronger guarantees than "the spec says you shouldn't do this unless the user is your employee and you paid for their device".

Until they fix this, I'm sticking with my mess of TOTP authenticators and yubikeys.

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All of the major operating systems and all of the major browsers are password managers. Apple, Google, Microsoft, and Mozilla are all password managers. They all have apps that let you access their password managers on other operating systems.

You're right that all of the major password managers like their lock in. The Credential Exchange Protocol is just barely good enough that OS vendors can say they "support" it, but tricky enough to find that ordinary users probably will never try it. (Not to mention that it doesn't even work yet on Windows or Android.)

As for attestation, the good news is that Apple always returns 0s for the attestation ID (because Apple, like you, opposes it as a side channel), and so any public site/app that insists on attestation would reject all Apple devices. This gives smaller password managers like Bitwarden sufficient cover to 0-out their attestation as well.

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Having to rely on a possibly proprietary password manager app to use a passkey sounds like a nightmare. A lot could go wrong with the password manager like becoming incompatible, becoming subscription based, lack of updates for bugs, etc. I don’t passkeys for the same reason as the original commenter.
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So to login using a public PC, you need either USB access (and carry around your password manager) or you need to install the password manager on the PC to log into a website?
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There’s a process to scan a QR code with your phone and your phone then authenticates with the passkey.
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I looked up the June 2026 breach and there is no mention of passwords being stolen. Only some PII (Phone, name, email, address) through a third party.
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> Major password managers don’t even allow you to export your passkeys to a file that you can read/backup yourself

That's a red flag to me. It's enough that phone backup systems go out of their way to prevent you from accessing your own data, too, for unexplained "sekhurity" reasons.

> P.S. It's past time to move off of LastPass. LastPass lost all of your passwords again last month, just like they did in 2022. The most similar service is 1Password. If you like LastPass, you'll like 1Password about the same, but 1Password hasn't had multiple terrible security breaches.

That's the most annoying thing about password managers, and a major reason I still don't use them: there exists no password manager that is cross-platform (desktop/mobile in particular), local-first, and isn't sketchy or enshittified or otherwise on HN's current "don't use it, use <whatever> instead" list.

For core security tool class, that doesn't inspire confidence.

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Apple, Google, Microsoft, Mozilla, and 1Password don’t let you export passkeys to a file that you can read and backup, but Bitwarden, Proton Pass, and KeepassXC do.

I think Bitwarden is on HN's current happy list. (I just use Apple iCloud myself.)

Allowing passkeys to be exported to a plaintext file undermines the phishing protections, at least somewhat. It’s possible to trick you into exporting your passkeys from Bitwarden and sending the file to an attacker.

The major password managers say that this is the reason they don’t allow exporting passkeys, and it’s not false, but they’re also making it harder to switch password managers, which may be their ulterior motive. (You can’t even import those exported passkey files into any of the major password managers, which they would be incentivized to do, if those smaller players had significant marketshare.)

It’s up to you to decide whether protecting yourself from being tricked into exporting your passkeys is worth sacrificing your ability to read them.

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I’ve relied on iCloud as well, but just learned that it allows apps to store persistent data. This data is synced between all devices, and there’s no way for you to view or manage/delete it. Even determining which apps do this requires you to enumerate the apps entitlements, which is nontrivial. And so an app you install on your iPhone can have configuration or credentials persist to each iCloud-connected device, and you have no control over it. This is certainly convenient, if that’s the behavior you want; if not, there’s no visibility or control.
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Is this different from the per-app enumeration in Account —> iCloud —> Storage? That provides a means to delete per app
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Depends on what qualifies as a password "manager", but I've been using pass (https://www.passwordstore.org/) for years on multiple desktops, and have recently added iOS app sepass to my setup (https://sepass.modiot.com/).

Quite complicated to get it all setup (definitely not for non-technical users), but both are GPL and I now have all my passwords available with hardware protection (yubikey on desktop, secure enclave on iOS) in all locations.

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It doesn't even have to be something as bare-bones as pass. You can have a full-fledged password manager that is open-source and local-first. KeepassXC (and the OG Keepass) were always OSS and local-first. The original version of Keepass 1.0 for Windows was released long before Lastpass or 1Password[1], so we had an open-source local-first password manager before we had commercial cloud-based managers.

[1] To be more accurate, although it was always proprietary, 1Password was also local-only at first, with syncing only supported by putting it on something like Dropbox. They only added native cloud syncing later and eventually made it cloud-first.

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> That's the most annoying thing about password managers, and a major reason I still don't use them: there exists no password manager that is cross-platform (desktop/mobile in particular), local-first, and isn't sketchy or enshittified or otherwise on HN's current "don't use it, use <whatever> instead" list.

I've used pwsafe for years now. I think it checks off all your boxes. Works on desktop and mobile. Local-first but allows cloud if you really want to. No ads or enshittification. Bonus: Open Source. Other Bonus: Not owned by BigTech or LittleTechThatValuesMonetizationOverSecurity

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> That's the most annoying thing about password managers, and a major reason I still don't use them: there exists no password manager that is cross-platform (desktop/mobile in particular), local-first, and isn't sketchy or enshittified or otherwise on HN's current "don't use it, use <whatever> instead" list.

I had the same frustration, I ended up with Keepass, the store is a open spec db[0] that has several clients, I use it across windows, android, and Linux without any issue and just sync with your favorite file sync tool.

0 - https://keepass.info/help/kb/kdbx.html

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This seems like a consolidation of risk to rely on a password manager, especially software defined, especially if it relies on a password. I like the hardware token idea (yubikey). But even that seems cumbersome because you should be making a copy for safe keeping. And how do you securely do password recovery if most security questions can be obtained via osint or the reset links are sent to a site you are similarly locked out of is compromised?
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Wait a sec. My understanding is that passkeys are public/private keypairs. Public is in server, so even breaking into a server does not reveal the private key.

The big risk with passkeys is storing the passkey where it will be held hostage. Don't store it in most single-ecosystem devices like Apple. Bitwarden can export, and I think 1Password can as well.

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That's where the attestation feature comes in. It allows them to force you into a hostage situations by restricting passkey implementation. There's a reason that was part of the spec from the get go but a passkey transfer system wasn't.
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> This is much, much simpler than you think it is. Passkeys are just passwords that require a password manager

Cool. So can I write down my passkey on a piece of paper and put it in a safe?

> you'll reset your passkey the same way you reset your password, probably with a "forgot my password" email

Cool. But what if I lose the passkey to my email account?

> and the passkey will be stored there and synchronized to all of your other devices

Cool. Surely backups and synchronization never fails.

> The weird part is that password managers provide no way for you to copy and paste your passkeys

Uh oh. So you are saying passkeys are not like passwords? Last time I checked, every password manager lets me copy and paste my passwords just in case.

> To present a passkey, you have to use a password manager

Uh oh. So you are saying passkeys are not like passwords, like at all? Last time I checked, I can just type in my password using a keyboard on all websites I visit.

> This makes it impossible to copy and paste your passkey to the wrong person

Uh oh. So it means I can't just give my password to a family member sitting in the opposite side of the room? Sorry mom, corporate has decided that you are trying to trick me.

> Major password managers don’t even allow you to export your passkeys to a file that you can read/backup yourself

Uh oh. So is there a registry of Major League Password Managers that are guaranteed to implement Corporate Strength Cybersecurity Measurements? Will I be blocked by services if I happen to have landed on a minor password manager?

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I love that you wrote 6 paragraphs and linked to a medium post all without actually answering the question posed by the comment you replied to.
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> This makes it impossible to copy and paste your passkey to the wrong person (someone trying to trick you).

It also, unfortunately, means it's not possible (via most passkey implementations) to back those passkeys up to paper. Which is quite unfortunate: backing up to paper is one of the most stable and human accessible ways of ensuring redundancy and continuity, an inevitable but also oft-ignored part of credential management.

Security folks would like to pretend "solving continuity" isn't a problem, or is a problem that doesn't need to be accessible.

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> back those passkeys up to paper

Is writing down passwords something people do? I have countless passwords saved over >20 years and I don’t think I’ve ever recorded one to paper. I even checked a couple of popular password management solutions and they don’t seem to have “print” functionality.

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Yes, this is extremely common, both as a continuity means and/or as a localized password manager. Know someone who uses a Rolodex for hers, which is funny and yet it works.

Doesn't work well in office environments, but at home the local threat model is largely fine with this.

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Yes. Old people constantly do it, since they have no hope of remembering 15 passwords. Sometimes, they can barely remember 1 (one).

I've written down one: the master password for my Keepass database, along with instructions on how to get to and open that file. It's in a 'open if I'm no longer alive' envelope.

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It is absolutely a thing people do. Google even offers a convenient printout as a way to provide account recovery.
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> Is writing down passwords something people do?

Yes, it's pretty common.

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The passphrase to my bitwarden database is in my will. And a bitlocker decryption key is right beside it.
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It is what the vast majority of people do.
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I doubt if that’s true since the vast majority of people no longer have printers. Not even the vast majority of online people.
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Both pens and pencils exist.
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I was not aware writing down a password required printers.
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> The weird part is that password managers provide no way for you to copy and paste your passkeys.

The main feature of passkeys is that they can't be pasted into a website they shouldn't be pasted in to. That means you can't copy them, by design.

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They're just text behind the scenes, so you can copy them if you really want to. KeepassX lets you do it, and got into a kerfuffle about it.[1]

It's an impossible design. It's all just obfuscation, most of which is confusing to users.

[1] https://github.com/keepassxreboot/keepassxc/issues/10407

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Oldschool KeePass ftw
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> This is much, much simpler than you think it is. Passkeys are just passwords that require a password manager.

This is not true. There are device bound passkeys where the private key is stored in a HSM (TPM2.0, Android SE, or apple SE) instead of a hosted service (iCloud, Bitwarden.com). You can just add multiple Passkeys to a single site to have another backup device should your other one be unavailable.

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Just have the 2nd device when you create any account. But have it away from the 1st device always. Just update 10s or 100s of accounts for every new device. Just never use sites which allows 1 Passkey.
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Speaking about hardware tokens:

If I have to go get the backup out of "secure" storage each time I want to add a new Passkey it's not really a backup.

The design should have allowed, even if it was just within only the purview of a single manufacturer, a method for the device to export an encrypted dump that could be reloaded onto a factory-new device. Heck, make it a value-added service that the manufacturer has to initiate and tie it to some real-world identity verification.

The idea of having to put backup devices in-hand regularly is a bad design.

Phone apps. get around this idiocy by backing-up the encrypted Passkeys to a hosted service.

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In practice, because site owners know users are going to mess up having their passkeys on all devices, I've not seen any insist that a passkey _must_ be used, and you can always log in with your password (or worst case, email magic links) as a fallback.

However, this negates the primary stated objective of passkeys, removing the possibility of users being phished, so I'm not sure how long that will remain the case everywhere.

I've also encountered sites that have a login with passkey prompt that then turns around and asks for TOTP 2FA or email confirmation anyway, which to me seems to negate the primary customer benefit of passkeys...

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> I've not seen any insist that a passkey _must_ be used, and you can always log in with your password (or worst case, email magic links) as a fallback.

With the exception of Github, and banks.

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Did you try it? That’s not correct. I just logged into GitHub with a password (+ 2FA), on an account that also has a passkey.

No major bank revokes your password when you setup a passkey, either.

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Is "passkey" only supposed to mean devices that implement specifically U2F, WebAuthn, etc.? I would have thought TOTP and challenge-response hardware tokens to count, including cellphones with apps that implement such.

As to

> No major bank revokes your password when you setup a passkey, either.

If we're talking about requiring 2FA via TOTP or challenge-response hardware tokens or banking apps implementing such, that depends on the country. It's the status-quo in some places. Some banks even put the input field for the token output as a third input in the login form on their website because all customers have them. The rest separate their login form in multiple steps, but they likely require it of all customers too.

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> I would have thought TOTP and challenge-response hardware tokens to count

Those are absolutely not passkeys. Passkeys are just WebAuthn (from what i can tell).

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Such a generic word. I imagine there are tons of CLI utilities out there with a --passkey option that refer to simply files with a key inside. Kind of crazy that it's being used to mean specifically devices that implement a specific protocol.

Kind of feels like "crypto is a type of currency and not all cryptography", or "SQL Server is a specific product of Microsoft".

Wonder if how it happened this time was people read the specs and explanations of WebAuthn, saw "passkey", never seen that word before and assumed it's only ever been used in the super narrow context of WebAuthn so it can only mean that. Maybe "header" can only ever mean "HTTP header".

Thinking about it like that, it may be more like how "latte" is specifically espresso with milk (it's really just milk), or "queso" is specifically cheese dip (it's really just cheese of any kind), or "masa" is specifically made of corn (it's really just dough of any kind, or it's mass like atomic mass is masa atómica).

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Isn't the standard term for what you're referring to a "keyfile"? Google Trends also indicates nobody was caring about "passkey" before 2022.
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There's no standard. "key" and "keyfile" are the most common, but they're not the only option. It can also be referred to as a "password file", since there's really not much difference between the concept of a password/passphrase and a key. A password is basically just a key you can remember, and hence tends to be shorter and legible. That's why e.g. from cryptsetup-open(8):

> --key-file Read the passphrase from the file.

They're synonyms to a degree.

Re: "passkey". You can search github:

> The password key file can then be used with the --passkey option. It provides the same security level as using the --passfile option but helps in setting up and using separate key files for different wallets.

> parser.add_argument('--passkey', help='YOUR_PASSWORD')

On

> Google Trends also indicates nobody was caring about "passkey" before 2022.

I think how this tends to happen is you have a term in a population and a larger population outside of it sees it in a very specific context and tightly ties the term to that very specific context. With the "masa" thing, when you're working with dough you don't tend to always specify "get me the wheat dough". You just leave the type implicit. Sufficient English-speakers must have heard "masa" in Mexico or something, where most dough tends to be made of corn and assumed that the term "masa" must only be usable in the context of "corn".

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"Passkey" refers to a very specific authentication method. TOTP, etc., don't count.
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Porkbun too
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This is the main reason I've avoided passkeys. I have these exact questions and there's no a clear explanation given for these. I don't want to lose access to important accounts.
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Agreed, it's the exact same as me, I haven't seen someone put it into such succint words before, so bravo.

I think the reason is because I've anchored passkeys into my understanding of how 2FA works, and the pain of migrating 2FA from one phone to another.

So, I don't want to bother with it.

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use an app where you can backup the 2FA DB.

https://f-droid.org/en/packages/org.liberty.android.freeotpp...

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oh my god, so not the point.
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> there's no a clear explanation

there's. it depends on how the site implemented passkeys.

I'm using multiple devices and passkeys via keepassXC. I haven't lost access or even got locked out of any accounts.

but it's like 2FA, and almost all sites have a clean fallback (backup codes) for 2FA.

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> there's. it depends on how the site implemented passkeys.

so. no clear explanation.

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the same is true of passwords. some sites provide password reset some don't. how is that not clear?
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> some sites provide password reset some don't

I'm yet to see a site that doesn't provide a password reset (excluding websites without passwords). What inane webdev though that'd be a good idea?

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How do you sync the KeePassXC file?
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This is the #1 most common misconception I see about passkeys. They do not make it more likely that you will lose access to your accounts. They actually have nothing to do with account recovery. They are just a stronger primary factor than a password.

Most providers continue to offer email-based recovery in the case that the end-user loses access to their primary factor, regardless of whether the primary factor is a password or a passkey.

And email based account recovery does not make the security advantages of passkeys disappear, which are:

- credential that's guaranteed to be unique

- credential that's guaranteed to be strong

- credential that cannot be phished (due to cryptographic binding to the domain at the time of credential creation)

- changes the incentives for compromising servers (there's nothing worth stealing from the server -- only public keys)

- if/when an app/website transitions to retiring password-based authN, then it will entirely eliminates credential stuffing attacks

And if the account recovery scenario in question is your Gmail or Apple account, then you would need to go through their account recovery flows regardless of whether you were using a password or a passkey:

https://support.google.com/accounts/answer/7682439?hl=en https://support.apple.com/en-us/118574

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If you use something like 1Password it's very easy. It stores your Passkey and it syncs cross device. It's another thing but once it's set up it's less of a pain than using authenticator apps or having to find some random iPad that Google popped up an approval prompt on.
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This is how I use them but you have to admit that this assumes 3-4 things about a user just to save them the hassle of supplying two factors at login time. It's also unclear to users if passkeys can be migrated from one password manager to another
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I get your problem, i don't really accept it as valid. Passkeys were always supposed to be fungible. You have one in your iPhone, a different one on your desktop. A third in your significant other's phone. All stored in the hardware tpm equivalent.

You can have 7 passkeys. You can have 14.

The real failure of passkeys (emphasis on the s!) is that people think they must only have one.

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I don't think that would work either.

Let's say I have a new account and a single Passkey in the TPM of PC1. I want to log in from PC2, too. How can I do that? (I know there is some trickery with Bluetooth, but I haven't seen anything supporting it, and desktop PCs usually doesn't have Bluetooth connectivity.)

AFAIK some browsers can do some magic to use a Passkey from your smartphone on a PC, but you need to log in to the same browser-sync account from both device (which brings back us to the same issue).

Also the whole thing becomes a mess when you change devices. You need to log into all the services you have ever used to delete the Passkeys from devices you no longer have, and you need to add a new passkey from a new device you bought to all the services you use.

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Can these services not use the same fallback mechanism that already exists for non-passkey logins? i.e. an email with a 1-time code or similar. Yes that somewhat defeats the purpose of passkeys but that option is going to exist for a long time regardless of passkey adoption.

If you don't want to downgrade security, how about requiring confirmation from another session that is already logged in using a passkey? e.g. You try to log in on PC2. A prompt appears with something like "confirm this login from [PC1, etc.]". You log in on PC1 using your passkey. The service recognizes that the login id definitely you, or at least someone in possession of your physical device and login method for that device. Therefore, it then allows PC2 to register a new passkey. Kinda similar to how google confirms new logins by sending a notification to your phone.

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You generate another passkey is your answer. How do you do that? The exact same way you do today. Why would you need to delete invalid passkeys? You wouldn't.
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> You generate another passkey is your answer. How do you do that? The exact same way you do today.

How can I do that, if Passkeys are the only option to log in?

If I can just use a password to log into a website without Passkeys, then Passkey is useless and doesn't add any security benefit.

> Why would you need to delete invalid passkeys? You wouldn't.

I sell my old (and no longer updated) phone or PC and don't want someone to get access to my account by getting access to the secret keys.

An non-revocable authentication mechanism is just stupid.

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> [...] people think they must only have one.

That's the real failure? I think the real failure is that people must have _more than one_. I thought so hard to add all my credentials to 1Password. Now people tell me I should use a Yubikey (or better two or three of them). What do you think, I'm going to register a couple of hundred accounts times three for something I already have (my password manager)?

The real advante in passkeys is in allowing me to log in into a service on a foreign device without typing [my password], which is (honestly) something now sane person should ever do.

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Again, I'm attracting people who fundamentally fail to grok passkeys . That's cool, but doesn't entitle you to anything
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Again, is this true for all major sites that support passkeys? And how do you set it up? My passwords are automatically synced between my devices, how to I achieve the same thing if I set up an account with a passkey?
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Why would you take one passkey and move it between devices? Generate a new one. They're fungible. You set it ask to the exact same way you do today. It's not a problem.
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This assumes all services let you generate new passkeys with no hassle, which is not true.
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Same here, also what if I lose the device?

I can safely write down a password on a piece of paper and keep it somewhere phyisically safe.

Passkeys and 2FA are a usability nightmare if you need to recover, or all the security vanishes if you put usable recovery mechanisms for the passkey or the second factor.

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>Passkeys and 2FA are a usability nightmare if you need to recover, or all the security vanishes if you put usable recovery mechanisms for the passkey or the second factor.

Most providers continue to offer email-based recovery in the case that the end-user loses access to their primary factor, regardless of whether the primary factor is a password or a passkey.

And email based account recovery does not make the security advantages of passkeys disappear, which are:

- credential that's guaranteed to be unique

- credential that's guaranteed to be strong

- credential that cannot be phished (due to cryptographic binding to the domain at the time of credential creation)

- changes the incentives for compromising servers (they're nothing worth stealing from the server -- only public keys)

- if/when an app/website transitions to retiring password-based authN, then it will entirely eliminates credential stuffing attacks

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That doesn't really explain if I can use said website on my phone with a password if I login with a passkey on my computer
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password managers do the backup for you based on how you set them up (eg. to your google drive, or to a simple SFTP/FTPS/S3 URI)

those that don't have this built-in (eg. KeePassXC) recommend using Dropbox or some external sync mechanism

but the keys are stored in a file, which you can back up.

> all the security vanishes if you put usable recovery mechanisms for the passkey or the second factor

no, not at all. it still gives you better UX, because when you use the passkey you know it's the site you want to log in to. (because there's mutual authentication.)

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2FA secrets can be backed up, and everyone should do that, for the same reason you'd want to do it with passwords.

Passkeys can too, but there it's even more obfuscated than with 2FA.

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You do the same as you do when you lose your SSH key. Restore from backup and move on with your life.

Why is there so much misinformation nonsense around passkeys?

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How do you use a restored passkey from backup? Aren't they locked to the device?
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That's all I want to know. How do I restore from a backup? Specifically, a backup that I make to a medium I control, like a piece of paper or a burned CD-R in a safe deposit box. If I could get a good answer to that, I could be onboard. But from the conversations that I am getting here, it looks like only certain managers allow it, and with device attestation, they could be banned at any moment by any website with no recourse.
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> * and with device attestation, they could be banned at any moment by any website with no recourse.*

Isn't this true of any authentication method? It doesn't seem unique to Passkeys.

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Now that I think about it, you are right. But if they could ban my use of written passwords as easily as banning my use of a particular passkey device, why go through all the extra hoops to just be as vulnerable as before? This seems like a whole lot of extra work to do that gains me nothing.
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I don't think the goal of passkeys was ever about making it easier to back them up or protecting you from websites that could ban you. I think (correct me if I'm wrong) the goal was always to make it nigh impossible for attackers to phish your credentials.
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I think it is important to explain why I and others are so reluctant to this.

In security, you identify reasonable threats. You can't protect against all of them, and some may even be contradictory.

When I get a call on my phone that says "Potential Spam", I have never even once in my life decided to run over to my list of passwords and hand them over to the President of the Spanish National Lottery. Not even once.

But on many, many occasions I have dealt with a simple system that was replaced by a more complicated one and something in that Rube Goldberg machine broke down and deprived me of access to money, email, even a parking permit to my office.

Passkeys seem to protect against the former case that has never happened to me, while increasing the chances of the latter that has happened way too often.

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It should go without saying that, while you've never given your passwords over to the President of the Spanish National Lottery, there people who do get duped into doing exactly that all the time.
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If you use Safari, they're locked to all of the devices on your iCloud account, not to a single device.
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I login to 1Password on another device and all passkeys are there, and usable.

The OSes I use where that works fine:

- Android - Windows - Linux - macOS - iOS

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How? Where are they stored? Which password protects them? How do I back them up? How do you move them to another device? Can I print them out on paper as a last resort measure?

Nobody fucking knows.

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it depends on which password manager you are using. if you use Google's then it gets backed up to your Google account.

BitWarden, KeePassXC, and probably a bunch of other password managers have very thorough support for import-export, automatic/periodic backup, sync/merge, etc.

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And that's a HUGE issue. SSH keys are easy to manage in comparison to PassKeys.
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Sounds like something security services would love people to use. Instead of using wrench to extract the password - and distressed person may lose memory, they can just locate the passkey.
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Nobody is safe from a nation-state "attack" they'll just go threaten your providers to give up your data. Passwords written on paper are probably safer than a centralized password manager for almost every circumstance other than a government coming after you.
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Papers: Safe - yes. Easy to lose/misplace: also yes.
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Humanity having millennia of experience securing them: also yes.
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I’d like to see them threaten Apple or Bank of America.
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My issue is that they're touted to the consumer as secure, and they're not really doing much more than a complex password.

How do you generate a new key if you need one? Same process as a password reset. Does it prevent session stealers? Not at all.

Its "benefit" is grandma can't read it to an attacker. OK, well can grandma click a link and have a session stealer bork her life instead? Yeah, and attackers know that and just shift methods. Session stealing isn't a sophisticated attack, and so all that's being done is shaving a cost on PW resets in the interest of shareholder value, at the cost of security theater and locking up your keys in a single domain that holds control over our access to everything.

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There is security value. A passkey will not work anywhere except the actual website. Fake look a like sites can't get the credentials. Evidently they can trick you into authorizing their device.
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That's also how any good password manager works. You'd have to manually copy-paste the password to get around the same-site fill restriction (whether it's autofill or manual fill).
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Sure? MitM isn't a new kind of attack, and I'd be surprised if the ball-of-wax-and-javascript that is WebAuthn isn't vulnerable to that...
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This is one of the key security features of passkeys. I did a little searching and the work around is to do a standard fake website that prompts for your standard credentials. That should be a fairly simple fix. Require access from a new device to be authorized from another source with an explanation that they will never request this info.
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Listening to Yubikey and OnePassword talk about this, they actually say "One Person, One Device". Which really speaks to their failure to understand their users.
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Because the original FIDO/WebAuthn standard was built for device bound credentials. They imagined unique keypairs tied strictly to a specific piece of hardware. Synced passkeys were a compromise, mostly driven by Apple and Google, because per-device credentials are too much friction for general use. It's not that they failed to understand users, it's that they incorrectly assumed the level of inconvenience people are willing to tolerate to be textbook secure (the answer is almost zero inconvenience).

The device bound model also completely falls apart in the enterprise, fails to address shared devices and shift workers where employees share the same PC under the same OS profile, now you're back to needing good old fashioned SSO w/ physical MFA (Yubikey) to attest who the user is in addition to attesting the device itself.

Before synced passkeys, the actual standard is a unique key pair per device. The key pair on my phone shouldn't be synced to my laptop, my laptop should generate it's own key pair.

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That is odd, I regularly use my Yubikey on multiple devices, that was the biggest draw.
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The Yubikey is the "one device". But most people don't buy Yubikeys so the "one device" is, in practice, a smartphone.
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Even then, unless you use one for work, where work can issue you a new one if you lose it, you're going to need (at least) two Yubikeys if you want to go that route, because not having a backup is a bad idea.
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I would love to see what you’re referencing, can you provide a link or citation to that quote?
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the video requires signing up for Yubikey spam. https://app.livestorm.co/yubico-y/securing-trusted-actions-a...
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I think the intended workflow is you login with your phone and that device is now the authority that allows other devices to issue their own passkeys.

In my opinion it's a bad plan, because it elevates certain devices to privileged status, if you lose your phone you are hosed.

Passkeys should be allowed to be synced between devices and stored on password managers in the cloud. I am making my own password manager for my personal use, but have not delved into passkeys.

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  > Passkeys should be allowed to be synced between devices and stored on password managers in the cloud. I am making my own password manager for my personal use, but have not delved into passkeys.
They are, that’s exactly how I use all my passkeys with Bitwarden. They sync to any device I have Bitwarden installed on when added on one device.
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Yeah that's all hackery I think, if you read at the specs there is always a device involved, bitwarden and company just pretend to be a device or have an extension that just ignores the spec.
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Wife and I use bitwarden. For shared accounts we put them in a shared folder, and the passkey is attached in there, in bitwarden, meaning it survives device resets.
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It makes sense for a work device that is off network/domain, but then it is your primary/only means of interfacing with services. Then you can consolidate under a Windows Hello passkey or something else.

The second you have a second device to log in from they are useless. The second you want or need to share a credential (smart or not) they are more work than a password.

The passkey trend seems lead by platforms that want to make it easier to get or stay logged in, Netflix type companies that want to prevent account sharing, and those that value convenience (if one device) over security.

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> Edit: One final consideration, my spouse and I share user/name passwords for some things (notably Pandora and our Amazon Prime account) since they don’t handle things like family logins well; how do both my wife and I use amazon or Pandora with passkeys? Do we each set up passkeys? How do I get her Pass if that’s not an option?

Lets say it is a android phone. Open amazon app. login in the usual user/password + 2FA (like with QRcode or phone). create passkey. done. This passkey would have been now synced to your google account.

Take next spouse phone. Open amazon website or app. try login it will try for passkey but cannot find it. so

- login in the usual user/password + 2FA (like with QRcode or phone). create passkey. done - Now this passkey would have synced to spouse google account.

In future, assuming you have apple or windows laptop. assume you have signed into Google (chrome). Now go to amazon. It will ask - shall I sign in with passkey. Yes, give your macos fingerprint or windows hello or password of that laptop. login Done magically. You dont even need to remember username or password.

Assuming you both have iPhones. You can sync the passkey to icloud account. And for every new iDevice it will be available.

The main bottleneck of passkey would be that all 3rd party sites will have another non-passkey way as backup to login. I have never seen a website that would say - remove all other methods and keep only passkey.

In a way passkey is 99% convenience. If a hacker would some how get your sms and password they can by-pass.

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Thanks. One glaring issue I see is that right now police can’t ask you for your password in the USA (a violation of the right against self-incrimination). They can however get a search warrant for your device and your biometrics, and wouldn’t need your password if they can gain access through your pass key.
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If you have it enabled, and you're in custody or at a border or similar, and have biometric auth enabled on your phone/computer, they can hold it up to your face or force you to put your finger on it to unlock it. Search warrant be damned.
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I think the point is that Passkeys are not supposed to be as precious as passwords. You're supposed to have a brand new one for every device/application combination. So they are just login cookies at this point, and haven't even come close to replacing passwords because you need to know your password to get a new passkey every time you log in.

Now, is that the official stance? I don't know; but it's _absolutely_ what every current implementation suggests the companies deploying this stuff want.

You can make passkeys better. Like me, you can install a well-funded password manager (well-funded, because it needs the engineering effort behind it to keep up with the ever-changing passkey apis on every platform in the world; screw up and oos, can't log in today!). Then you have one passkey per remote service, and just have to make sure 1password is _always_ installed and perfectly integrated. Easy!

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There are a couple of problems I have with that. 1) Many websites limit the number of passkeys I can link to my account. Some only allow 2 or 3. I have more devices than that. 2) If I am supposed to create a new passkey for every device, how do I login in the first place? Most websites currently fallback to password login which defeats the security benefit of using passkeys in the first place.

I currently only use passkeys for a few websites that have awkward password login workflows or do not autofill properly from my password manager. I just have a single passkey for each that is synced via Bitwarden. Currently, I see passkeys as using an electronic biometric lock on the front door while passwords are still regular locks on the backdoor. The biometric lock on the front door does not do much for security when the backdoor still exists and I have come across very few websites that support only allowing passkeys. And those that do still run into problem 2 listed above.

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Yeah, I agree. My policy is much the same as yours: set a passkey only when a site makes logging in with a password such a PITA that the PITA of a passkey becomes the easier option. Google comes to mind. They seem to actively not want anyone to log in. At some point sites will start to 2FA you even with a passkey, but we don't seem to be there yet.
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I use bitwarden[0]. It covers all cases and devices in question.

As a bonus, I self host using the open source vaultwarden[1] server implementation, which is packaged in alpine linux.

[0] https://bitwarden.com/ [1] https://github.com/dani-garcia/vaultwarden

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> If I accidentally set up a passkey on my phone (let’s say I use Safari one day instead of my go-to, Brave), can I still log in without that passkey on other devices?

N=1 and I'm sure I'm holding it wrong, but I can only log in to ADP to request PTO from my personal laptop because I set up an iCloud passkey, work laptop does not allow access to iCloud keychain, and you can't request PTO from mobile.

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Although that's more a failure of your workplace's security policy than of the Passkey itself. It makes sense that the passkey doesn't work if you can't access the place the passkey is stored.
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yeah but my problem is that I can't fall back to logging in to ADP with a password. Maybe there's some way to fix this? IDK.
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For me, it is "how many passkeys can I have for the same site?", and "how do I revoke them?"

Worse, I'm still using LastPass -- but migrating over to Chrome password storage as it syncs between phone and laptop. LastPass doesn't give you the option to not use it for passkeys. It might be the thing that causes me to finish the migration away from it.

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>If I accidentally set up a passkey on my phone (let’s say I use Safari one day instead of my go-to, Brave), can I still log in without that passkey on other devices?

Yes, but you can also add the passkey to your password manager so it's available on all your devices.

>Can I add another passkey on another device?

Yes.

>How many passkeys can I set up for a particular site/app?

I haven't really seen a specified limit on any sites, but also if you're using a password manager it's only 1 passkey for all your devices anyways.

> For now, I’m going to stick with LastPass and use Passwords; because no matter whether I lose my device or not or whether I’m on my own devices or not, I can be sure I’ll be able to get into a site/app.

Your passkeys would be in LastPass as well like your passwords, so arguably the same result regardless of which you use.

>Edit: One final consideration, my spouse and I share user/name passwords for some things (notably Pandora and our Amazon Prime account) since they don’t handle things like family logins well; how do both my wife and I use amazon or Pandora with passkeys? Do we each set up passkeys? How do I get her Pass if that’s not an option?

If it was me I'd add a second passkey to my password manager for your wife under a new entry, and share that entry to her lastpass account.

Or if she's not on lastpass, you could just copy the data from the passkey over to whatever she does use.

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I can't speak to all of your browser combinations, but most desktop browsers can present a QR code when logging in with a passkey. I keep my passkeys in a password manager synced between my phone and personal computers. On my work computer, where the password manager is not installed, I can still use passkeys by scanning the QR code with my iPhone's camera app.
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I find it abjectly terrifying. Like if I log into your site with a Passkey what happens if my device breaks? What if some big tech company decides to nuke my account for no good reason?
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Totally in the same boat, passkeys seem to massively increase the risk that I will lose access to my data.
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I've taken up the strategy of telling any less-technical person who asks me about passkeys that they are the mark of the beast, intrinsically evil, and should be avoided at all costs, and I encourage all y'all to do the same.

Maybe, at some distant point in the past, there was a plan for a whole system of intercommunicating implementations of passkeys. That is no longer the case. The moment that they decided to include the information necessary to only allow the use of certain passkey vaults in the protocol, and then use that capability to threaten to lock out certain vaults that dared to let users actually be in control of THEIR OWN DAMN CREDENTIALS, it invalidated the entire project in my eyes. Passkeys cannot be trusted, they are designed to let entrenched powers hold your authentication hostage, and should under no circumstances be allowed to take root in the computing ecosystem.

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>...they are the mark of the beast, intrinsically evil, and should be avoided at all costs

That's basically my recommendations to people.

1. Avoid using them if possible.

2. If you have to use them, make sure you have a password login to fall back on.

3. If the site forces you to use them, make sure you don't use it for any thing you rely on.

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You can store your passkeys in Bitwarden or Keepass vault. Then you can use them through Bitwarden or Keepass apps on any other device. Been using passkeys like this for several years, and it works pretty seamlessly. With Keepass vault, I even have an offline copy as backup.
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If you store the key in Bitwarden or Keepass, what makes it different from a password?
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The difference is you can't just copy and paste the private key into a phishing website. The login process validates your private key and logs you in.

Also since the service does not store your private key, it is more resistant to data-breaches as that is one less potential breach source.

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They are bigger. Not as easy to guess. More like pretty impossible. It's like not letting the user choose the password. That way they can't have a bad password.
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But these same services are the reason why my passwords are as short as they are. They made me use 'short passwords' by putting upper limits on them.
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Main difference is that my banking website doesn't make me use SMS 2FA if I use a passkey to log in.
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If you save it via Passwords app, it'll be iOS / macOS mainly, but you can unlock with any Apple device that supports Passkey / Passwords app (so likely modern + reasonably updated) the easiest. If you want it to work "everywhere" then you CAN use your iOS / MacOS Passkey, it will show you a QR code, some places poorly support this, I believe both devices need bluetooth, and then it will authenticate it.

Linux is the only oddball here, I had issues getting this flow to work.

If the UX for Passkey improves, I will go all-in on it, I'm at the point I'd love to just completely block passwords from accessing my account, unless I explicitly enable it temporarily by logging on via passkey, I wish some sites would let me lock my account to this level, it would be better. Passwords feel like they just wind up all over the web.

Weirdly enough you can store multiple passkeys for a given domain, which can get confusing in some cases if they dont have normal names tied to them.

Edit: Originally I thought Passwords from Apple was iOS / macOS only, but its not! So I have been editing my original message, sorry for the confusion, I had forgotten that I can login on Windows with my Passkeys from Apple's ecosystem.

As another poster noted, you can transfer them out of Apple's ecosystem too!

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> Linux is the only oddball here, I had issues getting this flow to work.

Take a guess why.

Passkeys are just a trick for vendor lock-in disguised as a security practice.

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They are, however, completely unphishable, which is a big plus IMHO
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Firefox just didn't support it cleanly, I think Chrome did, I don't remember. Apparently it's just due to Linux not having a native passkey implementation. Dang.

Edit:

Apparently BitWarden should work, but my particular passkey was not on there.

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> Apparently it's just due to Linux not having a native passkey implementation.

Excuse me? The infrastructure for "an apps is trying to login with a private/public key pair, and right now it needs the private key to encrypt some part of the transaction" has existed on Linux since it began.

The problem, as best as I can understand it, is that some/all browsers are not treating passkeys as an extension of the key system that began with ssh(1), even though technically speaking, they are.

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I use Bitwarden on Linux. There is no option to do anything with a passkey I have stored there except delete it.
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Unpopular opinion but correct the whole thing has been designed to lock you to devices they make and have themselves be the arbiter of your authentication.

If that wasn't the intent they could have make the thing work like ssh keys, encrypted at rest, you can take them wherever you want.

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I don't think that's the unpopular opinion, I think that's the standard opinion, outside of the corporate security cloister.
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It is not Apple's job to implement Passkey into Linux, that is up to the Linux community to build up and figure out, and then for Firefox to implement it on Linux. On the other hand, Chrome just works with it, so maybe Firefox either implements it for Linux in-house, or figures out an existing initiative they could invest resources towards and help to prop up so they can integrate against it on Linux.
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My issue is not the lack of Linux support, my issue is the dependence on hardware components, that are distributed by a small group of incumbents, that is pretty much baked into the spec.

What they want is to lock your identity to your android and/or iphone devices.

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What are you talking about? I can literally export all that data to another OS or password manager. Takes a whopping single click.
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Only to other proprietary systems within the FIDO Alliance that you don't own or control.

Additionally passkeys allow services to detect and ban specific password managers, so have fun when the only approved managers that works consistently across all services are Google/Apple/Microsoft. There is already a list of "bad" clients here https://passkeys.dev/docs/reference/known-issues/

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Again, what are you taking about? There are open source implementations available. I can write my own. They do work. This list just shows some which do not actually implement the spec correctly.

Also moving the goalpost. The post I replied to said I couldn’t export it. I absolutely can, and have, with a single click. To another provider. It’s really not a big deal.

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I didn't realize this was supported, I'm kind of favoring Apple's Passwords app since you can lockdown your account and they are very on top of someone accessing anything of yours. Any time I power on an iPad I havent used for months they tell me a new device can read my texts type of thing, which is a nice paper trail.
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I wouldn't favor an application that is locked to a big player account (Microsoft, Apple, Google) where a ToS violation for something unrelated may lock you out of all services, passwords/keys included.
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Yes me too. And it works great. I do make a backup of it to another provider once in a while though, just in case.
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Also note this from the spec:

> A Public Key Credential Source’s generating authenticator determines at creation time whether the public key credential source is allowed to be backed up. Backup eligibility is signaled in authenticator data’s flags along with the current backup state. Backup eligibility is a credential property and is permanent for a given public key credential source. A backup eligible public key credential source is referred to as a multi-device credential whereas one that is not backup eligible is referred to as a single-device credential. See also § 6.1.3 Credential Backup State.

* https://www.w3.org/TR/webauthn-3/#backup-eligible

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(small parenthesis, please consider to _not_ use lastpass given they have had so many security incidents https://en.wikipedia.org/wiki/LastPass#Security_incidents )
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Answer to almost all of your questions is that it entirely depends on the service what kind of auth implementation they offer. I personally have completely adopted passkeys and use them with every service that allows it.

I use ProtonPass and have made it the default password store on every device and browser. This way all passkeys get stored in proton and I can login from any other personal device with proton setup.

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> ...it entirely depends on the service what kind of auth implementation they offer.

I think that's exactly the problem. These are all answerable questions, but getting those answers is confusing for most people.

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Also from experience, most sites will implement it in every wrong way possible.

For example, all the major sites that allow the total of 1 active TotP authenticator app - trying to add one forces to delete the other. Which is fine while you have only one phone and aren't in the process of switching to another one.

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With foresight you can get around this since you can reuse the TOTP seed values.

The annoying thing is so many services don't even support TOTP. They either want their own proprietary app, still insist on SMS, some of them even try to get you to use voice prints!

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> These are all answerable questions, but getting those answers is confusing for most people.

It's the same answer when someone asks 'how am I supposed to have a different password for every site' and 'how am I supposed to remember a password of X+ characters.' Use a password manager. Pretty sure every major one supports passkeys by now.

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So passkeys achieve nothing if you can already use strong, secure, random passwords stored in a password manager?
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Write it down on a sheet of paper and put the paper in a safe place. As a bonus, I can have multiple copies in multiple places. It is simple, easy, and I have been doing it all my life. I see no reason why it has to be more complicated than that.
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Password managers are themselves cross-device footguns and I could easily write the same headline for them myself. I've been working in tech for 20 years now, and I don't use them.

ETA: Well I do use auto-fill in browsers/mobile, but funny thing about this, I have three running on my phone[0], they all activate at the same time, and they contain mostly non-overlapping set of credentials, and I got tired of trying to sync them together, so I just look up passwords manually one by one in each and use clipboard to transfer the credential once I find it.

And I had to stop using passkeys because they interact with this split-brain system in unpredictable ways.

--

[0] - Specifically: Google Password Manager / Google Autofill / whatever they call it, Samsung Pass / Samsung Wallet (they're sort of but not the same?), and auto-fill built into Firefox.

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Password managers for passkeys have a huge problem when dealing with any kind of remote support or working on someone else's hardware - you can't just copy/paste or type in the passkey so you're forced to install the password manager on a family member's/stranger's/employer's PC or do what? I'm not even sure. At least SSH keys have forwarding when you ssh to a remote machine, how do you "forward" a passkey?
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With Apple's Passwords app, you can create "groups" for passwords and passkeys and share them with people. Once shared, the passkey/password automatically fills as if it was that person's own.

I have a "Family" group in my Passwords app where I share passwords and passkeys with family members for exactly this purpose.

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Don't think it's any more confusing than e.g. logging in with an email address and password, or logging in with email + code, etc. A website's auth is usually a black box that they don't explain, and the only reason people find passkeys confusing is because they've been conditioned to enter passwords instead.
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Notwithstanding the danger of having everything on a single platform, the Apple passkey works great. Sign into one and you’re signed in everywhere and you can share passwords with others.
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I use ProtonPass and afaiu it just syncs the passkeys private part everywhere you need it. So it “just works”. This is better than just old fashioned credentials because the passkey only “triggers” on the correct domain, so they can’t be phished by other domains… Right?
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The thing I find burdensome is managing all the keys in a secure way. I think I would want a hardware token to store the keys on, have separate keys for every site, need to back up my keys onto a second token in case the first one is lost, etc. It gets burdensome. At least with passwords you can store them in various ways that are not hardware or software dependent.
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Same. I'm a tech professional, and I don't set up passkeys for similar reasons. I log in to online services from a lot of different devices and browsers. I use a password manager but the keys to the kingdom (my email password) exists only in my head.
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I don't know the exact tech behind it, but for a phone passkey I get a QR code on my laptop screen to scan with my phone, I accept it, and it logs me in.
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Not sure about lastpass, but you can save passkeys to 1password. Works just fine.
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I’ve just been operating under the assumption passkeys are gonna lock me out unrecoverably in some way at some point, and have been avoiding them for anything important while allowing them for low-value accounts so they’ll stop nagging me.

I hate that I can’t just put a value in a plain text file somewhere (encrypted, let’s say, to preempt the inevitable and low-value response) and rely on that to work when I need it on any device and interface that can accept keyboard input.

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I avoid using them altogether for the same reason. I won't use them for low value accounts because it signals that I think they might be acceptable to eventually require for high value ones. And of course low value accounts have no value so I don't even care about phishing on most of those.
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Haha, this thread has prompted me to follow some of the discussion about stupid bullshit like requiring "user is present" attestation and banning passkey programs (LOL wut?) if they lie about it, or resistance to allowing exports and portability.

I'm now on team "I am outright anti-passkeys and hope they fail and everyone pushing them cries a whole lot about it and never gets over it".

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Copying / syncing passkeys between password managers is still work in progress, but you can usually work around it by making multiple keys. For important websites, I recommend saving additional passkeys to Keychain, etc, as backup, assuming the website allows that. (It should, but some websites might not have a good implementation.)

Also, nothing says you have to delete passwords (or alternate means of logging in) if you already have them set up. Having multiple ways in will help prevent lockout.

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Unfortunately probably implementation specific, but you don't always need to have multiple passkeys. There is cross device passkey login. I had this occur in the last couple weeks. Evidently I had created a passkey on my phone. Logging into that site on my PC, it identified that I had a passkey and allowed me to authenticate using my phone.
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I save all my passkeys in Bitwarden and they sync across devices.
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I recognize the point of your post is more about the lack of clarity and details around passkeys. That's real, and I don't really have an answer for that - other than, I think maybe the quest for making them simple and "just work" has maybe made them nebulous enough that we've wound up in the current situation where a lot of even technically savvy people don't really understand them. But I feel like answering your questions might sort of help explain why that's the case, so I'm going to take a stab at it:

> If I accidentally set up a passkey on my phone (let’s say I use Safari one day instead of my go-to, Brave), can I still log in without that passkey on other devices?

Assuming you have LastPass set up to be an iOS password manager, and it fully supports iOS' passkey implementation: when you create a passkey in Safari, it will ask you if you want to store it in LastPass or in the iOS Passwords app (previously known as iCloud Keychain). If you say LastPass, then it's up to them, but I assume it'll sync to all your devices - it's how 1Password works. If you were to accidentally say Apple Passwords, it'll sync to all your Apple devices automatically, and you can either use Apple's password browser extension on Windows, or you can use the "another device flow" I'm about to detail.

> Is there a way to ensure that passkey can be used on other devices?

As mentioned above, passkeys are intended to sync via your password manager of choice as the primary use case. If for any reason you don't have that passkey synced to that device, _and that passkey is on a mobile device with a camera_, most browsers will give you the option to scan a QR code with your phone. This kicks off a flow that will authenticate you via your phone's biometrics or passkey, then use Bluetooth to first ensure device proximity and then handle the authentication exchange. In the case of iOS, this includes any passkey-supporting password manager, so the passkey itself can be in 1Password; it doesn't have to be in the iOS password system for this to work.

When I first read the above, my hackles were raised given how well Bluetooth operates at times; but every time I've used it so far, it's been fast and flawless. Still, I can see a lot of scenarios where this might not work - e.g., the first one I thought of was a public computer at a library where Bluetooth might be locked down; corporate computers or remote servers could also be troublesome. As far as I know, passkeys don't yet have answers to those scenarios; other than to just use your password + 2FA as you would without a passkey.

As far as I know, both of the above apply to every passkey-consuming site.

> Can I add another passkey on another device? How many passkeys can I set up for a particular site/app?

This touches on your last paragraph, where it indeed could change based on the website. In my experience, every website where passkeys are fully supported - e.g., not ones that are using passkeys as a substitute for FIDO/U2F keys - has let me add multiple passkeys and have not _appeared_ to have a limit. I typically will create a passkey in both 1Password and Apple Passwords just to have a backup, and I can't recall any cases where that's been a problem. Still, I can't say for sure that isn't a problem on any website.

I went all in on trying passkeys when they started to be an option, and I don't have any notable regrets. For me, passkeys have generally worked well when the site is designed to use them well; and at no point have they been a _major_ hindrance. That isn't to say there are _no_ annoyances, though:

- Most websites that support passkeys tend to use them as a replacement for both the password _and_ 2FA, which makes them more convenient. However, a few - Amazon being the most notable I can recall - only use them as a second factor, which just makes them feel a little useless.

- A passkey can _also_ be used as the proof of identity, meaning you can log in in one fell swoop and don't need to enter a username or email address, which is IMO the best showcase for passkeys. Like above, this makes websites that ask you to enter an email address before letting you use a passkey also feel annoying.

- Most web browsers I've used support the QR + Bluetooth flow I mentioned above (otherwise known as Hybrid Transport or caBLE) without issue; Linux has been the odd duck out. Firefox doesn't seem to support it at all on Linux, and Chrome-based browsers do but sometimes are missing what they need and in that case don't show it as an option. Since I sync just about every passkey with 1Password this typically isn't a problem; the exception is the passkey for Apple Accounts, which Apple creates automatically, and (AFAIK) doesn't allow you to enroll your own. Apple Accounts are the only service I've found that does this, though.

- Some websites seem to only offer passkeys as an option if you're on a mobile device, or at least did so at the time of enrolling. eBay and PayPal I think are the two that jump out at me as having done this. Why they did it this way instead of simply detecting if the browser supported passkeys, I have no idea.

All of the above issues have gone down over time, so it's generally been a net decrease in friction over time. And, at least as far as I can recall, passwords themselves continue to be an option in every instance I've enrolled a passkey. So if you like your passwords, generally speaking, you can keep them :P

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> passkeys are intended to sync via your password manager of choice as the primary use case.

The sync was actually a compromise to the standard. The idea was unique, device-bound credentials. One person, one device. The private key/passkey on your phone should not be the same one on your laptop, or your tablet, etc. Each device was supposed to have it' own unique credential.

Allowing sync is a security downgrade to the standard, in terms of threat-model guarantees. Pure WebAuthn credentials should be sealed in hardware (TPM or Secure Enclave or equivalent) and be mathematically non-exportable which guarantees zero remote blast radius, an attacker must physically posses the device.

Allowing sync and storing passkeys in a password manager reintroduces cloud account compromise risk and recovery flow hijacks. You lose non-repudiation.

Still more secure than passphrase + TOTP, but doesn't eliminate account takeover attacks against your cloud credential vault, which purely hardware based, per-device credentials do.

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I don't get it. How does every device combo having a unique key pair help with security? They can all log in, right? So all you need is to compromise their session and you're in, whether they share the same passkey or not.

And if you're compromised in such a way that an attacker could steal your password then wouldn't they be able to just hijack your session instead?

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Passkeys protect against credential theft, not session hijacking, two different parts of the stack. Passkey's only concern is initial authentication, it was never meant to provide any sort of protection against session theft. RFC 9449 Proof of Possession is how you prevent session hijacking, or session binding with a client-side TLS certificate.

Device-bound passkeys take care of non-repudiation. With synced keys (e.g., 1password), an account compromise of your vault hands the attacker all your credentials, the private keys are in the vault.

Device-bound keeps the private key sealed in the TPM (or secure enclave), the key cannot be exported, so it cannot be extracted remotely. Even malware on the machine, can hijack your session, but it cannot exfiltrate your private key, TPM won't release it to the service without user verification via biometrics, yubikey, or a PIN. There's also an attestation chain that breaks with synced passkeys. The attacker has no way to get your private key, so the only way to compromise the account is, yes, session hijacking, or physical access to the device with the user present to pass the biometrics check.

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> Still, I can see a lot of scenarios where this might not work - e.g., the first one I thought of was a public computer at a library where Bluetooth might be locked down; corporate computers or remote servers could also be troublesome.

None of my desktop computers support Bluetooth. Neither do my wife’s.

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I’m 90% certain most of the push for passkeys is to prevent paid account sharing.
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Why not use passkeys in LastPass? Then the passkey travels with you to your devices/apps.
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oh good I thought it was just me who didn't understand them
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You can add as many passkeys as you want and you can still have password logins too.
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I have come across many websites that limit how many passkeys I can add. Some have only allowed one or two.
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Yeah, it's bad implementation on the websites but the protocol doesn't have a limit.
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I'm using bitwarden, but it's possible to use passkeys from multiple devices and if it's not available for whatever reason, you can just login with username/password/token/biological probe/whatever you used before. As an example: GitLab gives you both options right from the start, so you can use whatever you fancy in that particular moment.
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Did [someone from the Working Group] ever back down from their implied threat to blacklist Bitwarden for allowing for the sharing/export of passkeys?

That really rubbed me the wrong way, and smacked very heavily of "the big players (MSFT, AAPL, GOOG) can do this - you can't".

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I know KeePassXC faced the same threat. I don't know whatever became of it.
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Passkeys basically MITM the 2FA process so that they can track and deplatform you with a single click across all your accounts.

The biometric verification also allows to confirm that a certain person is holding the device, and they can easily be matched to existing passport/travel databases.

Great system if the good guys have it, a bit problematic if it's abused by nepo kids to hide their crimes.

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> Passkeys basically MITM the 2FA process so that they can track and deplatform you with a single click across all your accounts.

I use passkeys with a physical authenticator. How do "they" track and deplatform me with a single click? Can you explain?

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The service can use the use the attestation feature to block passkey providers that are deemed undesirable for whatever reason. Hard not to see eventually only major providers being accepted, even things like Microsoft services requiring Microsoft Passkeys using the Microsoft Passkey App which you're now required to have on your phone. Or worse you now need Symantec Passkeys to login to Symantec services (using that example since I believe Symantec had a ToTP App you needed to reverse engineer to extract the ToTP seed from if you wanted to use a different Authenticator)
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If a service wanted to do that they could already do that, you even point to an example with a platform requiring their specific app to use the account. I've had banks which required me to have their own time-based code physical security tokens to log in, isn't that in the end the same?

This thing you're talking about isn't inherently a thing about passkeys. If a service wants to remove your ability to log in to their service they can do it in a million different ways.

Also, the above poster said:

> deplatform you with a single click across all your accounts

"They" could do it across all your accounts with a single click. If service A decides to require attestation, how is that now affecting all my accounts?

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Unfortunately the US has willfully destroyed a significant amount of goodwill with citizens of their NATO allies. Due to aggressive rhetoric we are forced to look at the risks differently now.

Further centralization on US services for something that already works fine (like 2FA) is unnecessary risk.

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I agree the US has torched a lot of international goodwill.

Once again how does this relate to passkeys? You don't have to use US companies to use passkeys. There are European providers of authenticators. What country is Yubico based out of again? Just picking one example, there are others.

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It’s really not that hard.

Most of your devices are in the Apple ecosystem and when you are prompted to create a passphrase it will ask you to put it in your iCloud Keychain. Boom, now it is available across all of those

This is how it will work for most people who don’t care about security and just casually use their devices. My boomer mom does this. It’s better than the notebook full of handwritten passwords she was using.

You have chosen lastpass and a multi-ecosystem environment with windows and multiple browsers on each. You have chosen complexity and this is not a limitation of passsphrases as they have been designed for a more common use case.

I use Linux and apple. I have chosen protonpass for my vault. I just tell my OS to save the passkey there and everything works pretty well. If not, my password is right there as fallback. It’s really not that hard.

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Proton Pass is on the official Passkey client naughty list[1]. I hope the services you log in to don't choose to ban it because of those big, scary X's.

[1] https://passkeys.dev/docs/reference/known-issues/

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The fact that services can ban passkey providers is a major red flag in the protocol and the real issue that nobody talks about

well, people are talking about it but it's not making a difference https://lucumr.pocoo.org/2025/9/2/passkeys/

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This is why I am so concerned about passkeys. They could be a good improvement, but in practice I already see how it's going to result in Google/Apple/Microsoft/whoever seizing even more control.

The document there is laughable too, because KeepassXC is listed as "not performing User Verification" when it demands manual authorization per request. But this isn't good enough for the passkey people. Ultimately, I see any FOSS option being effectively banned from most services and all important ones. It's a parallel to how you must now be on Cloudflare's nice list or be banned from the majority of the internet.

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Yeah they're really trying to solve problems that should be solved at a technical level with soft solutions in porcelain. See also this issue asking keepassxc to disable plaintext exports, which is completely technically feasible

https://github.com/keepassxreboot/keepassxc/issues/10407

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The author of this ticket seems to come across as an arrogant know-it-all that thinks "the threats i thought of (or personally face) are the only threats that are significant, fuck anyone in a different situation."

I proudly print my entire KDBX file including passkey private keys and I encourage my elderly parents to do so too.

Lightning strikes (and assisting people with cleanup and repair from them) have taught me that there are definitely a class of threats that will leave me with paper but possibly no technology until I can go buy a cheap laptop to restart my digital life, SO BEING ABLE TO BACK EVERYTHING UP IS ABSOLUTELY ESSENTIAL.

His website says he's in Boston, so I seriously doubt he's ever seen what lightning can do or dealt with a hurricane or tornado.

In general, if you're in the FIDO Alliance and had anything to do with the kind of micromanagement that passkeys can allow, FUCK YOU. Go get a job at Walmart as a greeter. We'll all be better off.

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That issue was exactly why I took up my "Never use, under any circumstances" stance on passkeys. It is an indictment of the entire passkey project. I now routinely tell the less technical folks in my life, when asked about those weird passkey options, that they are the mark of the beast, and should be avoided at all costs.
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(I might be wrong, please correct me if I am) What I'm gathering from this page is that the Passkey spec can specify whether the app handling the passkey should prompt the user for biometric scan, PIN code, etc. but some apps simply ignore that flag. This makes sense though. I've already logged into my password manager and it hasn't timed out yet, so why would my password manager prompt me again? I'm glad that they don't prompt me again when I'm already logged in. I don't see this as a problem.
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Your understanding is correct and I agree with you. The Passkey spec authors, however, think services should be allowed to ban your client for behaving this way:

> [When UV is required, KeePassXC must request user verification or not handle the request]

> This implementation is not spec compliant and has the potential to be blocked by relying parties.

https://github.com/keepassxreboot/keepassxc/issues/10406

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> > This implementation is not spec compliant and has the potential to be blocked by relying parties.

The only conclusion I can come to when it comes to this and the earlier kerfuffle regarding being able to export the plain text of passkeys is 'the spec is bad and you should feel bad'.

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Yeah, it sucks. It could've been a cool technology but they're so locked in to "my way or nothing" and won't consider other usecases or security trade-offs other than the ones they decided on. It's just a complete non-starter with that attitude.
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Right, not only are you authorized, but you are also prompted to manually complete the request, which will fail if you do not accept. However, this isn't considered sufficient by the passkey people, who do in fact want you to retype your password at each prompt.
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What if I lose all my apple devices? House break-in and they steal my mac and my phone?

You're basically fucked even if you buy a new one because you need one of the other two to log in.

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Then you'll login to your Apple iCloud account using your password.

Passkeys are just passwords that require a password manager; you can't login to a password manager without something outside the password manager, usually a password. (That's why they call it "LassPass" and "1Password"; there's one last password you'll still have to maintain.)

No password manager tries to get you to login with a passkey without setting a password, for precisely that reason. Apple, Google, and Microsoft do invite you to login to their password managers via passkey, because it's convenient and unphishable, but they always also allow you to login via password (or "backup codes", which are just backup passwords).

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No technology in the world can protect you against every threat model and unlikely scenario.

What if the robber hits you in the head and you get brain damage and forget your password?

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That is not a rare threat model. Many people use iPhones and Windows computers. Fortunately, Apple has released iCloud Passwords which lets you access passwords and passkeys from a Windows computer.
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Did not know that - how well does it work?
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That's the point: passkeys, and even 2FA, address rare and unlikely threat scenarios, while defeating most common use cases (delegation by sharing credentials), and making people vulnerable to most common threats (like, losing or breaking your phone).
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A password has the best recovery process. Period. Write it down somewhere. It's up to me, no third party.

I had more trouble with a failed 2FA than with a password.

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Master password to password vault stored on metal, buried in my backyard and I tell a family member where it is in case I ever get brain damage
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Family member gossips "that crazy [deejaaymac] always burying secrets in the backyard..."

Or straight up betrays you (you slighted them at some family event)

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If you marry someone you don’t trust, you’re going to have a lot more problems than password compromise.
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these questions all have easy answers that could be quite easily discovered by simply trying to use passkeys, instead of trying to find reasons not to use them.
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You shouldn't be forced to discover what capabilities exist by brute force. Just freaking explain it.
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But since there's a potential nonzero risk of permanent account loss, I don't want to experiment, and since I can still log in with email/password I'm going to keep doing that.
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