private lateinit var executor: Executor
  private lateinit var biometricPrompt: BiometricPrompt
  private lateinit var promptInfo: BiometricPrompt.PromptInfo

executor = ContextCompat.getMainExecutor(this)
      biometricPrompt =
          BiometricPrompt(this, executor, object : BiometricPrompt.AuthenticationCallback() {
              override fun onAuthenticationError(errorCode: Int, errString: CharSequence) {
                  super.onAuthenticationError(errorCode, errString)
                  binding.tvAuthStatus.text = "Error " + errorCode
                  binding.tvAuthStatus.setTextColor(Color.parseColor("#FF0000"))
              }

              override fun onAuthenticationSucceeded(result: BiometricPrompt.AuthenticationResult) {
                  super.onAuthenticationSucceeded(result)
                  binding.tvAuthStatus.text = "Authentication succeeded"
                  binding.tvAuthStatus.setTextColor(Color.parseColor("#00FF00"))
              }

              override fun onAuthenticationFailed() {
                  super.onAuthenticationFailed()
                  binding.tvAuthStatus.text = "Authentication failed"
                  binding.tvAuthStatus.setTextColor(Color.parseColor("#9C27B0"))
              }
          })


      promptInfo = BiometricPrompt.PromptInfo.Builder()
          .setTitle("Biometric Authentication")
          .setSubtitle("Log in using fingerPrint")
          .setNegativeButtonText("Cancel")
          .build()

      binding.btnAuth.setOnClickListener {
          biometricPrompt.authenticate(promptInfo)
      }