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.).

Download and install the Google Authenticator app. Log in to your Google account. It will automatically restore your Google Authenticator codes.

Google’s Authenticator App Just Got a Handy New 2FA Tool You can now sync sign-in codes across devices—but they aren’t end-to-end encrypted. Photograph: Rasid Necati Aslim/Getty Images ...

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.

Data synced between devices with the new Google Authenticator app update could be viewed by third parties.