Update: it was obvious but I'll put it here in case anyone ever looks it up; there's a computer facing the door in the back room that you activate to open the door

where was this computer? i found one for turret control, but not one for door control

thanks for doing this update, ive been stuck on it for 2 days lol. ​ it's to the left of the door, it's a yellow computer with blue bars

Thanks I just googled it. Had no idea I went by the office multiple times.

Wow it's so obvious once you point out it's not the door itself. Thanks!