Ключевые слова: alertness, background, camera, cctv, closedcircuit, computer, concept, control, display, footage, guard, gun, hands, home, indoor, information, internet, live, male, man, modern, monitor, monitoring, office, online, pc, person, personal, police, privacy, private, property, protect, radio, safeguard, safety, screen, secure, security, service, smart, surveillance, system, table, technology, television, text, transceivers, video, view,