89.10 Starting the Biometric Prompt

All that remains is to add code to the authenticateUser() method to create and configure a BiometricPrompt instance and initiate the authentication. Add the authenticateUser() method as follows:

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import android.view.View

import android.content.DialogInterface

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fun authenticateUser(view: View) {

    val biometricPrompt = BiometricPrompt.Builder(this)

            .setTitle("Biometric Demo")

            .setSubtitle("Authentication is required to continue")

            .setDescription("This app uses biometric authentication to protect your data.")

            .setNegativeButton("Cancel", this.mainExecutor,

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