All you have to do is scan a QR code for the service you want to turn 2FA on for, and the app will generate a new log-in code around every 30 seconds.

Once enabled, an authenticator app can be used to scan the QR code displayed, which confirms the device and enables TOTP.

Now, Google has updated the Authenticator with the ability to transfer all of its data to a new phone. The process is simple and it boils down to choosing an account and scanning a QR code on your ...

You can sync your authenticator codes to your Google Account and across your devices. It offers support for multiple accounts, and you can transfer accounts between devices by using a QR code.

Google Authenticator now syncs one-time codes with your account, so you're not stuck if you lose your device.

Google Authenticator app lets other apps take screenshots of its code. Issue was first reported to Google in October 2014, but it was never addressed.