sometimes its too secure
Many years ago (when computers were still cream and monitors gave the user a dose of radiation) the print firm my Dad worked for was broken in to and their MAC computers all taken. 3 months later the robbers came back and took all the new shiny Mac's, so a big metal door was fitted with a metal frame. 6 months after that the criminals returned, this time hooking a chain to the frame of the door and using their car to pull it out the building. At this point the owner had enough and fitted a 'smoke cloak' system linked to a monitored alarm system as well as a new heavy duty door. The criminals never returned, but the alarm people accidentally set the system off while servicing it, the engineer was found curled in the corner shaking from the shock of the noise and not being able to see/breath due to the smoke, all the mac's had to be cleaned as they were covered in dust.
The worst thing about all of this, as a senior designer with customers who just wanted to deal with him, my Dad was in another part of the building with his own reception, private office and assistant. So his Mac was not taken and he was stuck with the oldest slowest machine in the company, he was not happy about this an said if ever he got his hands on the crooks he would tell give them a key and tell them about the internal route from his office to the main design studio that bypassed the metal door.