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

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.).

However, this app has not gotten any update for the past two years (the last update was in 2017). This raises the question "Is Google Authenticator still secure without an update?" ...