But, emergency evacuation would be greatly compromised. Interior doors must be able to open independent of any locking system.
Possibly some sort of secondary door, outside the building in a fenced in area could be developed. Say the building door is alarmed and the exterior gate can be monitored by video so that way, the alarm sounds, security guards watch the video to see the gate and make sure whoever triggered the alarm is not allowing ingress to someone.
That whole thing could be done for a few thousand dollars a door.
> Possibly some sort of secondary door, outside the building in a fenced in area could be developed. <
That is a very good idea. And unlike the building doors, these secondary doors would be out in the open, and so could easily be monitored.