i saw a map with a door and a pannel neer it with 9 buttons. you had to press the buttons 4 3 and 8 in that order to open the door. if you pressed one out of order the panel reset.
i did notice that the other buttons didnt even work untill i hit the right first one. then only the right second one worked and if i missed it reset.
i want to set this up for a sliding door and was curious how.
