// Пример использования нового API для авторизации по биометрии
class AuthenticationSampleActivity : FragmentActivity() {

    private val authResultLauncher = registerForAuthenticationResult(
        onAuthFailedCallback = {
            Log.i(TAG, "onAuthenticationFailed, try again")
        },

        resultCallback = { result: AuthenticationResult ->
            when(result) {
                is AuthenticationResult.Success -> result.authType
                is AuthenticationResult.Error -> result.errorCode
            }
        }
    )

    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)

        val authRequest: AuthenticationRequest =
            AuthenticationRequest.Biometric.Builder(...)
               // Setup build request
                .build()

        authResultLauncher.launch(authRequest)
    }
}