TL;DR
- Strings in the latest Android 15 beta suggest the OS can automatically delete biometrics that aren’t working well.
- Android will delete your face or fingerprint unlock when they aren’t working well and then prompt you to set them up again.
- We don’t know how the OS determines when a biometric isn’t working well or if this feature is even live yet in the latest Android 15 beta, though.
What about bad actors which swipe the phone, and it’s behind the biometric lock? Too many failed attempts may or may not be a sign of it not working well, so if it bases part of it on the failed attempts, it would lower the chances of being further protected. I know they would ask for the pattern/pin or password to re-enroll the biometric, but let’s assume that’s already known, then game over.