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> You can't authenticate a person using their (public) fingerprint information.

Yes, but it's a signal! There's a cost to spoof it. A scammer could cheaply start a VM that clones your font profile, but at what cost could they replicate your CPU SKU and GPU combination to provide identical webGL timings?

Other signals include the ability of your employee to show their face on a video call, to sound like themselves on a voice call, the ability contact you from their home IP, to receive official mail at their listed address, to produce a second 2FA token you'd previously registered (but not activated) or repeat a code word you'd exchanged. Any of these things can be spoofed, bypassed, copied, or burgled, but each one imposes some cost on the attacker.

The question is how to surface this information in a way that equips help desk staff and doesn't deceive them into authorizing unnecessary risks.

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