Yes, it’s like a key. :)

Though realistically I use a passkey for services I care about and a password manager for the rest.

Keys can be copied very easily. It’s one of their primary features. Can you easily copy your USB key?

	▲	krupan an hour ago \| parent \| next [-]
		Physical keys can easily be copied, and physical locks can easily be picked. That might be fine for your house or storage unit, but for your bank account or your car (newer cars no longer have simple physical keys/locks), we've moved beyond that tech.
	▲	jazzyjackson 2 hours ago \| parent \| prev [-]
		Yubikeys are Secure Enclaves designed to not be copyable