[genpfault]

> Passkeys on users’ phones and computers are backed up and synced through the cloud to prevent lockouts in the case of device loss.

How do you back them up locally?

[randyrand]

It seems to be the only question they are unwilling to answer.

Keys for me, but not for thee!

[sneak]

You probably can't use them at all unless you use iCloud Keychain.