This is correct entirely. Now to get the last 10% of cases to do that. Like that early room (pre rape scene) where you drop down from the ceiling, and see the code on the wall, but can also see it through the window.In 90% of cases, door codes are in notes on tablets or in emails on terminals. Once you open a note with a code, this code will be in the door interface (where you need to enter the code). The notes and emails also describe which door the code is for.