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Security Entrance

This entrance has three doors. The first two are sensor activated, so that only mechanics may enter. The last door is activated by the correct pattern and time intervals of a 3x3 grid(9 buttons in total). WHAT YOU NEED TO OPEN LAST DOOR: The order is top row left, bottom row right, middle row middle, top row middle, bottom row left. YOU MUST PUNCH THESE IN AT ONE SECOND INTERVALS. You may not get it everytime, but with enough repitition you should be able to to it consistently. Since I am ♥♥♥♥ at logic, I used a simple timer system with one second intervals from 5 sec to 1 sec, so that if you do it correctly, all timers would activate at the same time, openning the door. Once you open the last door, it can be closed and openned again from the inside with a button. When leaving you can close the door with the same code or with the button if you get the right angle. The to front doors are sensored based, so you can walk out freely. You can see how this works with the timers and crappy logic when you enter the passcode if you break a hole through the wall or just look through the back into the logic room. You can alter the code by rewiring the buttons and changing the timers. It is ugly and takes up a bunch of space, but It can easily be rebuilt to be more compact.