Is there any way for me to use fingerprint authentication for device unlock/etc without using a MacBook Pro? Do Apple sell like a fingerprint ID external device?

Ok so the only thing they sell is a keyboard, but I don’t want to use an Apple keyboard, so I’m going to glue the Apple keyboard to the bottom of my desk to one side and use it only for fingerprint auth under the table. Will report back

You could take it apart and gut the shit you don't need. Since it's under the desk it doesn't have to look pretty just small and functional.