Google Authenticator is one of the most popular ... boasts of advanced support for mobile bitcoin wallets. Authy is free to download and is available across all major platforms.

When you create an Authenticator account (Microsoft, Google, or iCloud), the backup is available in the cloud storage of the respective services. For Microsoft, it’s OneDrive, and for Apple ...

The app can be used for other systems that support two-step verification codes, like Google and Dropbox. Read: Turn on Cloud Backup for Microsoft Authenticator app on Android & iPhone. A post ...