Like safe codes, many door keycodes are randomly generated in Prey, but several of them are static - meaning they're the same every time you play. Below, you will find a list of the static keycodes in one section, and a list of where to find the randomly generated keycodes in another.
Static/Unchanging Door Codes
Morgan Yu's Office Door Code
Holding Room Door Code
I.T. Department Door Code
Armory Door Code
Reactor Room Door Code
Randomly Generated Door Codes
Volunteer Quarters Door Code
Pilot Lounge Door Code
Director Thorstein's Office Door Code
More to come.