Few years ago, I've made three types of locks for Wasteland 2155 project:
a) a typical lock, when you use it, it locks the container and you can open it with a key,
b) electronic lock with 4-digit code, you lock the container with it, then when you try to open it, a dialogue window appears and you have to provide the correct code to open it,
c) retinal scanner lock, it remembers the character that used it on the locker and opens it only for him
If I remember correctly option a) was available on 2238 so it should be possible on Reloaded, option c) isn't as much useful because it works only for one character (if someone has many alts then he would need some key keeper alt), option b) should be the most useful then.
Making some big base for large faction with rooms for individual players should be possible, access via code/access cards, maybe possible for leader (only) to change codes or bypass it, but... some nice concept should be made if this is going to be working correctly, so I leave this topic open for discussion.