BiometricAuthentication

Here is a demonstration for Biometric Authentication for corresponding feature enabled Android devices. For more info:

1. https://developer.android.com/training/sign-in/biometric-auth
2. https://android-developers.googleblog.com/2019/10/one-biometric-api-over-all-android.html?fbclid=IwAR3RNUMNuQHq1Wieow_E5YVuxwglQpc7oXMJgxuWImQ8lvBu8S5d7AYu4OU