Visitors entering a building are required to close the back door before the front door of the same entry room is
open. Which of the following is being described?
Mantraps are designed to contain an unauthorized, potentially hostile person/individual physically until
authorities arrive. Mantraps are typically manufactured with bulletproof glass, high-strength doors, and locks
and to allow the minimal amount of individuals depending on its size. Some mantraps even include scales that
will weigh the person. The doors are designed in such a way as to open only when the mantrap is occupied or
empty and not in-between. This means that the backdoor must first close before the front door will open;
exactly what is required in this scenario.