An entry control system allows the movement of authorized personnel and material into and out of facilities, while detecting and possibly delaying movement of unauthorized personnel and contraband. Entry control elements may be found at a facility boundary or perimeter, such as at vehicle gates, building entry points, or doors into rooms or other special areas within a building.
The objectives of an entry control system used for physical protection are:
• to permit only authorized persons to enter and exit;
• to detect and prevent the entry or exit of contraband material (weapons, explosives, unauthorized tools, or critical ...