Slightly off topic, but Gunit did raise it in this thread.................I once worked on a high security (defence) site and wondered why the base unit, screen, AND KEYBOARD for each individual workstation had the same unique inventory number.

I hadn't thought of a physical keylogger ............that has just explained and taught me something................thanks.

BTW I have seen TWO guys get 11 years for trying to sell military secrets, so it does happen.