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BiometricPrompt.authenticate() function returns error code 11 (ERROR_NO_BIOMETRICS) in some Samsung devices like A20s (android 9) meanwhile user has enrolled fingerprint and also canAuthenticate(Authenticators.BIOMETRIC_WEAK) returns 0 (BIOMETRIC_SUCCESS) means device biometric hardware is available and enrolled.

I'm using library version 'androidx.biometric:biometric:1.2.0-alpha03'

any solutions?

Mohsen Einhesari
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    Not all Samsung devices meet requirements, apparently. See https://issuetracker.google.com/issues/142150327#comment17 and https://issuetracker.google.com/issues/141918357#comment2 – CommonsWare Apr 27 '21 at 13:34
  • @CommonsWare think these issues you mentioned are about face scan/iris scanner not fingerprint. fingerprint sensor should meet the requirements, am I right? – Mohsen Einhesari Apr 27 '21 at 13:54
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    I have no idea, sorry. If you wanted, you could create a project that reproduces your problem and file your own issue on that tracker, including the project and the specific Samsung models that give you `ERROR_NO_BIOMETRICS`. My general point is that they apparently do some sort of allowlist/denylist stuff, and perhaps your devices are getting the results that they are because of that logic. – CommonsWare Apr 27 '21 at 14:00
  • @CommonsWare FYI issued solved by an android system update. from android 9 to 10. – Mohsen Einhesari Apr 28 '21 at 07:50

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