89.4 Adding the Biometric Permission to the Manifest File
Biometric authentication requires that the app request the USE_BIOMETRIC permission within the project manifest file. Within the Android Studio Project tool window locate and edit the app -> manifests -> AndroidManifest.xml file to add the permission request as follows:
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.ebookfrenzy.biometricdemo">
<uses-permission
android:name="android.permission.USE_BIOMETRIC" />
.
.