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.).

Google Authenticator, the app that gives your accounts additional security by generating timed codes for two-factor authentication, will now be able to store those one-time passwords on your ...

Google isn’t the only firm offering 2FA sign-in codes to provide backups. Since 2019, Microsoft has allowed people to use a “backup and restore” tool for its Microsoft Authenticator app.