I think parent is talking about Play Integrity being integrated into banking apps. It's a hit or miss depending on the bank, some will be fine without, some with integrate it but not rely on it to directly refuse login, some will require a lower integrity level, and some will actually require the highest integrity level leading to issues on custom ROMs.
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replyThey really aren't. The number of apps requiring Play Integrity grows every day, my own bank's app hasn't worked in years and I've long given up on it, I just use it on a second stock device now.
replyAnd Google has an answer to the "just install the APK from somewhere else" workaround, too. Many apps now integrate a check that prevents them from running if they're not properly linked to the Play Store.
Are banking apps much more useful than banking websites, anyway?
replyDepends highly on the bank and what part of the world you're in. Some banks have only a website and no app. Some banks have only an app and no website. Some require an app to access the website. The landscape is widely varied.
replyDon't know what the landscape is like in the US, but here in Europe, many banks require the app for any sort of online payment. There is no alternative. If your phone isn't stock, you're screwed.
replyMy Android is running Lineage without Google Play Services (no microg either).
replyI had an app that I needed to use, and the only available log-in method was via firebase's SMS. Firebase flat out refused to allow me to login because of Google Play Integrity, and there was no web only option.
I ended up having to use my spouse's iPhone...
>My Android is running Lineage without Google Play Services (no microg either).
reply>Firebase flat out refused to allow me to login because of Google Play Integrity
Sounds like the issue is that you don't have play services installed, rather than play integrity specifically.