Passkeys is like embedded Yubikeys, or, Yubikeys are like external passkeys.
The point of passkeys that the key is kept inside a separate secure computer running secure blobs, so user codes can't touch it. That sounds sketchy but contactless payments using similar embedded secure computer has been fine so this should be too.
The point of passkeys that the key is kept inside a separate secure computer running secure blobs, so user codes can't touch it. That sounds sketchy but contactless payments using similar embedded secure computer has been fine so this should be too.