> do you have a backup key ? You should always have keys per device (as has been discussed in other comments here). So if you have >1 device, you'll automatica

> do you have a backup key ? You should always have keys per device (as has been discussed in other comments here). So if you have >1 device, you'll automatically have backups. > If so, how do you protect that ? While it may seem bad to have some keys less securely protected than others, the ability to revoke a single device means that using Yubikey / Secure Enclave / whatever on one device is still better than using them on none.