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Re:Passkeys: The Beginning of the End of the Password by dwaite on Wednesday May 03, 2023 @09:00PM (#35809955)
It isn't (just) a private key. It is part of a purpose-built authentication process that leverages private keys as a component.

You cannot use the private key within a passkey for general purpose data signing, for example.

Re:Passkeys: The Beginning of the End of the Password by Spivak on Thursday May 04, 2023 @08:32AM (#35814262)
What's stopping you? I have no intention of ever locking my keys in a hardware vault away from my own access and they're plain ole keys underneath.
Re:Passkeys: The Beginning of the End of the Password by witheld on Thursday May 04, 2023 @01:09PM (#35818753)
Then you can’t use passkeys!