Is there an iPhone TOTP app that can back up and restore its security keys to a file on my iMac?
This is the problem I am trying to solve: I want to use a TOTP app on my iPhone to perform 2FA on a few web sites. I want to plan ahead for my iPhone getting lost, stolen, or replaced. Some of the web sites I use offer a suitable solution, such as "backup codes" or "recovery codes" that I can store securely on my iMac. But not all of them.
I don't want to store my security keys on a remote server. I am satisfied with the backup/security regime on my iMac. I wish to minimize my reliance on cloud services.
Thanks for any suggestions.