Two-factor authentication (2FA), sometimes referred to as two-step verification or dual-factor authentication, is a security process in which users provide two different authentication factors to verify their identity. It's used to provide an additional layer of security for user accounts.
Why we recommend using "Authy"
With Authy’s multiple-device functionality, your 2FA tokens automatically sync to any new device you authorize. And, if a device is lost, stolen, or retired, you can deauthorize it from any authorized device just as quickly.
Since Authy is available for Android, and iOS mobile devices, and for Windows, Apple Watch, and even your desktop, you can use Authy to stay protected from all devices simultaneously. Google Authenticator users are tied to a single device, so if you want to register a new phone or tablet, Google Authenticator automatically unregisters your current device.
Some feel that having tokens on multiple devices is risky. So, if you fall into that camp, please note that Authy has made this feature optional and you can disable it at any time. Ready to link multiple devices? Start here.