The idea of a passkey is that it is a security certificate that permanently bound to the software/hardware and can’t be exfiltrated, in the same fashion you’d make one SSH private key per device connecting to a server, never leaving the computer it was generated from.
You don’t backup your Passkeys, you associate multiple passkeys per account (ie: ProtonPass, Bitwarden, Yubikeys) as a contingency.
If you can back it up, it can be stolen.
EngineerGaming@feddit.nl 2 months ago
I have hopes for a normal implementation because KeepassXC does have passkeys now.