But it could be. Yes?

Not really. The attestation model defined for workforce (enterprise) credential managers/authenticators doesn't really work in practice for consumer credential managers.

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pseudalopex 4 days ago | parent [-]

> doesn't really work in practice

Avoid weasel words please. Is it possible in theory to use attestation or any other Passkeys feature ever to prevent a user to use any software they chose with any service they chose?

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jesseendahl 4 days ago | parent [-]

In theory any code could be written at any time that does something good or bad. Sure.

But in reality, the people who actually work on these standards within the FIDO alliance do not want a world where every website/service makes arbitrary decisions on which password managers are allowed. That would be a nightmare.

	▲	deltoidmaximus 4 days ago \| parent [-]
		Will be a nightmare. If they really didn't want this they wouldn't have put the tool to do it right in the spec.