Ключевые слова: alarm, big, building, camera, cctv, circuit, city, closed, control, crime, detection, digital, electronic, equipment, guard, home, industry, lens, look, modern, monitor, monitoring, observe, outdoor, police, privacy, private, property, protect, protection, record, safe, safety, secrecy, secure, security, sign, sky, spy, street, surveillance, system, technology, television, urban, video, view, wall, watch, white,