An authenticator app generates special login codes for you to verify your identity online. Wondering why you need these codes ...

First, turn on two-factor authentication for the account. You'll get a QR code or setup key. Next, open the Google Authenticator app and tap the plus sign. Record the 2FA code/key. Whenever you're ...

Open the app, tap the three vertical dots at the top right corner, and open Settings. Enable Cloud backup. How do I get a QR code for the Microsoft Authenticator app? Why is the sign-in approval ...

You must select Allow, so the authenticator app can access your camera to take a picture of the QR code in the next step. If you do not allow the camera, you can still set up the authenticator app, ...