We have enough traffic and larger vehicles that separate gates are necessary. We have keypads at both gates which helps a lot arming and disarming individual door alarms and, at closing time, making sure everyone has left.
We don't technically have an 'entrance' and 'exit'. We have two sides to our facility and each side has only one gate, both gates do have keypads though. (If that makes sense, it's hard to explain.)
We have keypads at the entrance gate, exit gate, building doors, and elevators! No one has access to anywhere except their own level of the building they're in!
Answers
I-43 Storage