Google Authenticator has been around for over a decade, is free, and will work with virtually every service that supports ...

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. This week, Google has given its 2FA app ...

This usually generates a QR code, which you can then scan using the Microsoft Authenticator app. Now that you have your accounts set up, you'll be prompted to enter a six-digit code the next time ...

I prefer the option to use an authenticator app rather than receiving codes via text message whenever possible, and so should you. The reason is simple logistics.

Aegis Authenticator is a highly customizable authentication app for Android users with tools to keep the codes it generates safe.

This is the app you might have gravitated towards for your Google account—because it’s made by Google—but this is actually one of the more basic authenticator apps out there. Adding accounts ...

Pick the accounts you want (all) and it will generate a QR code. On the second device start google Authenticator select Transfer Accounts > Import Accounts. Scan the QR code from the first phone.