No person shall operate a movie arcade unless there are no fewer than two doorways of a width no less than thirty-six inches and a height of not less than six feet eight inches which provide ingress or egress from any room in which a movie arcade device is located; provided, however, that one doorway shall be sufficient in the event the building official should so determine. Doorway or doorways shall be unlocked during business hours. (Ord. 2552 (part), 1985).