Relax Luther, it's much worse than you think.
The only certified technician has to pass a series of security scans. First one is voice activated.
Then, he has to put in a 6 digit code.
That only gets him into the outer room. In order to get in the vault, he first has to pass a retina scan. Then, the door will unlock by only by two electronic keycards, which we won't have.
In the vault, there are three security sensors that will activate at anytime the technician is out of the room. First is voice sensitive, anything above a whisper, will set it off. The second one senses the temperature even the body heat of an unauthorized person in the room can set it off if the temperature rises by a single degree. The temperature is controlled by an air duct system 30 feet above the floor. The vent is guarded by a laser net.
The third one is on the floor, and it's pressure sensitive. Just the slightest increase in weight will set it off. If any of these 3 sensors are set off will trigger an automatic lockdown. Let me tell you, gentlemen, that all three systems, are state of the art.