How to Add an Account to Google Authenticator You need two things: Google's authenticator app and a code from the account you want to add to the app (Facebook, Amazon, your bank, etc.).

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

While authenticator apps are vastly more secure than text messages for getting your security codes, the safest login method no longer relies on codes—or even passwords—at all.