Google Authenticator is one of the most effective standalone two-factor authentication apps available, but it has one major flaw: the one-time passwords (OTPs) it generates are only accessible from one device because the service lacks cloud backup. This is finally changing with the addition of a new feature that allows you to sync 2FA codes to your Google account, enabling you to use Authenticator on multiple devices at the same time.
With OTPs now backed up to your Google account, you’ll be able to access the codes from any device that’s signed into Google Authenticator. However, if you have 2FA enabled on your Google account, you’ll need to generate backup codes or add a recovery phone number for that account in order to continue using Google Authenticator.