just an interesting side point, your fingerprint lives persistently in the fingerprint reader, rather than "in your computer": by analogy, what I mean is someth

just an interesting side point, your fingerprint lives persistently in the fingerprint reader, rather than "in your computer": by analogy, what I mean is something like, "if your fingerprint reader is in your mouse, then your fingerprint lives in your mouse, not at the other end of the wire plugged into the computer." I know this because I own a bunch of Thinkpads and I swapped out a keyboard for one that had been unused for several years, and my fingerprint came back piggyback. I had to configure the password change, but I didn't have to retrain it on my fingerprint. (the fingerprint reader circuit board lives right under the touchspot, and plugs into the motherboard via a short cable; the motherboard and OS installed had no notion of fingerprints before this because the keyboard I swapped out did not have a fingerprint reader) Not sure if that's a security issue for discarded hardware? but I found it quite strange.