Comment: human factor (Score 1) 128
I worked in a county jail for a few days. The jail was new. Guards were still getting the hang of the door system operated from a single control room. These two prisoners in the hall, mopping the floor were joking about how doors would open and shut for no reason (guards learning how to use the system). As on queue three doors in a row open up. The two prisoners and I could see cars freaking driving on the road next door. One of these guys taps his mop to the window of the control room, points at the "road to freedom". The guard closed those doors pretty fast and was visibly embarrassed. Good times. :-)
NEVER underestimate the human factor. USB keys! Sheesh!