When I was in the Navy there was a Tactical computer
system that I was not
allowed to touch the keyboard on. If I touched the keyboard, it would
crash, otherwise it was nice and stable. The theory was that it was
something to do with me, and the metal enclosure holding the keyboard. I
didn't have to actually type anything on the keyboard, and it happened
multiple times. It didn't happen with anyone else, and I've never had it
happen with another computer.
I had a business partner before that happened that to him. Every
computer he touched, would crash and wouldn't recover in his hands. Maybe he
was full of static, he had lots of body hair and usually would wear nylon