How to Add an Account to Google Authenticator You need two things: Google's authenticator app and a code from the account you want to add to the app (Facebook, Amazon, your bank, etc.).

How Google Authenticator’s account syncing works Once you update the Authenticator app on Android or iOS, you’ll find a brand-new app icon, and a green cloud image in the top-right corner.

While Google Authenticator is immensely popular, one of the biggest critiques has been the inability to back up one-time 2FA codes and the lack of multi-device support.

An update to Google Authenticator this week finally enabled backups for your two-factor authentication codes. But the feature comes with a security risk.

Install Google Authenticator on your device. Android iOS Locate your account's two-factor authentication setup process. You should get a QR code or a long string of characters.