You can disable fingerprint/face authentication on the au ID Membership Information website.
Please refer to the detailed steps below.
Access the au ID Membership Information website.
Tap on "Log in with au ID" [au IDを入力してログイン].
Enter your "au ID" and tap on "Next" [次へ].
Authentication will be performed using the authentication method you have registered (fingerprint/face authentication).
Wait for authentication to complete.
Tap on [≡MENU].
Tap on "Fingerprint/Face Authentication Login Settings" [指紋・顔認証によるログイン設定].
Tap on [OK].
Authentication will be performed using the authentication method you have registered (fingerprint/face authentication).
Wait for authentication to complete.
Tap on the "Remove Switch" [解除スイッチ] for the device you wish to disable.
Tap on "Remove Registered Device" [登録済端末を解除].
Tap on "Remove Registered Device" [登録済端末を解除].
You have successfully disabled fingerprint/face authentication login settings.
Android: Android 7.0 or later and using Chrome browser
iOS: iOS 14.0 or later and using Safari
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