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by AStonesThrow 383 days ago
A security key is a hardware token that uses USB, Bluetooth, NFC. A security key may not have TOTP capability like a Yubikey. Security keys are not marketed or suitable for consumers, and sysadmins don’t like them either:

https://utcc.utoronto.ca/~cks/space/blog/sysadmin/YubikeyMos...

You may be thinking of "passkeys" and while a security key can be a form of passkeys, the ones generated for your mum will be on her device, yes.

A passkey is a shortcut, for now. Relying on a passkey being in place is another good way to forget your password. ;-)