So, on the strong recommendations of Ars and the forums back in the day, I had been using Authy, originally on Android/MacOS but recently on an iPhone and Windows 10. Then, of course, Authy stopped ...

Google Authenticator first launched in 2010, and the app—which stores and generates two-factor authentication (2FA) codes—lacked backups and multi-device support for years. It made transferring phones ...