FingerprintDialog from Android 28 (P) back ported to Android 23 (M).

This was a part of my practice where i tried to work with android fingerprint authentication.It was quite fun.I used some built in library.

Secure Android offline storage for login credentials? Social Login? Cryptography, Android TEE, KeyStore, SafetyNet, Biometric, KeyGuard, Cipher, IV, LockScreen

Fingerprint Authentication in Android Simple Code