The security system at Mr. Hallandsen's office doesn't seem to make much sense. When Egon and his gang disguise them self as German businessmen to get access to Hallandsen's office, Egon learn that to open the door to the office, the secretary has a button at her desk. When Egon enter the office the alarm is triggered by invisible laser beams built into the door frame. To turn off the alarm, the secretary has to enter the office and push a button at a control panel at Hallandsen's desk. During the heist all of this being repeated, even the lasers being turn back on after Egon has gotten access to the office so the security guards would't notice that they're off. This begs the quest; how was Hallandsen able to not only gain access to his office if the lasers are only activated from inside the room, and how was he able to leave once they where? A second button that activates the lasers isn't shown.