The main doors to the front of the building are to be kept permanently closed and locked by means of overhead door closers and magnetic locks. The doors can be released by:
Placing your apartment access fob againt the control panel outside the main entrance door.
Pressing the door release inside the buildng by the entrance door.
Pressing the door release on your intercom entry system inside your apartment which has been activated by a visitor from the control panel outside the building.
There is also fire escapes located in the building which must be kept locked at all times and only used in the event of a fire.