E. Ideally, an institution should have a single entrance only , monitored by a staff person and equipped with an intercom system , for communicating with anyone who comes to the door. External barriers may also be considered. General The best way to prevent a crime of incursion is to make its commission difficult. An institutional security system can begin with a simple dead-bolt lock and expand to sophisticated electronic intrusion and notification equipment. The value of adequate lighting as a deterrent to crime cannot be overemphasized.
Adequate lighting is a cost-effective line of defense in preventing crime.
All sides and approaches to the facility should be illuminated. Lighting should be directed downward and away from the facility and away from personnel assigned to patrol the facility. The goal is to create as few shadows as possible. Perimeter lights should be installed so the cones of illumination overlap, eliminating areas of total darkness if any one fails to light. A weekly visual examination should be made of all exterior illumination to ensure proper function.