Google Authenticator can generate one-time verification codes for sites and apps that support Authenticator app 2-Step Verification. If you set up 2-Step Verification, you can use the Google Authenticator app to generate codes to sign in to your Google Account. You can still generate codes without an internet connection or mobile service.

With Google Authenticator, you can synchronize your verification codes across all your devices, simply by signing in to your Google Account. Google encrypts Authenticator codes both in transit and at rest across our products. This means that your codes remain encrypted in our systems and protected from any potential bad actors.

Important: To use Google Authenticator on your Android device, you need Android version 6.0 or above. To use synchronization, you must have version 6.0 or above on Android, or version 4.0 or above on iOS.

You can save your codes safely in your Google Account with Google Authenticator. This helps protect you from being locked out of your account when you change devices. However, you may instead choose to use Google Authenticator without these protections.

When you sign in to your Google Account within Google Authenticator on a new device, your codes are automatically synced to this device. If you use Google Authenticator without a Google Account, you can still manually transfer your codes to another device.

Authenticator can sync codes for multiple Google Accounts and display them from the same mobile device. You can also use the search bar to find the code you need, edit your Authenticator codes, organize them, and delete them.