My school bought a hand-scanner device to secure the front door. Either they cheaped out or they got swindled by the vendor: people quickly realized that the surface you were supposed to put your hand on, palm down, got super gross; and also that apparently most people’s hands are sufficiently symmetrical that putting your other hand on the plate palm up provided an outline similar enough to be accepted.
I’ve no doubt that the state of the art is considerably better; but this one was not an impressive showing.
Also, they might have left the default vendor passwords unchanged on the control unit and not VLANed it off from the default data VLAN were all the PCs had free reign.
