Mastering Google Authenticator: A Step-by-Step Guide.
Google Authenticator is a more secure way to manage two-factor authentication (2FA) codes than receiving them via text message. To set it up, download the app, log in with your Google account, and scan a QR code or manually enter the code for the online account you want to set up. Google recently added functionality that enables your codes to be synced across your Google account. To access your codes, open the app and use the impermanent code associated with the account you want to log in to.