Access barriers and crowd control products manage heavy foot traffic in busy facilities and outdoor events, restrict access to prohibited areas, block hazards, protect pedestrians, and guide motorists. Metal detectors, scanners, and accessories alert security personnel to the presence of metal or explosives. Security and access doors secure entrances to facilities and provide access to areas that house equipment and utilities. Folding security gates expand and retract to restrict access across large doorways or openings. Key control and duplication products manage keys and access to buildings. ID cards, printers, and supplies help manage building access for personnel, attendees, and visitors. Locks secure property from unauthorized access and protect equipment from theft. Mailboxes receive and hold delivered mail in secure compartments until it can be retrieved. Safes are locking storage boxes that protect valuables from theft and damage. Security alarms and warnings prevent theft and emit loud sounds in an emergency. Facility fire alarm systems detect dangers and sound alarms in large industrial facilities. Military, tactical, and public security equipment is used by military and public safety personnel to provide security, manage incidents, and protect themselves and civilians from threats. Security seals prevent tampering with shipping containers, freight, and totes. Video surveillance equipment installs in strategic areas to record and deter crime.