Ключевые слова: alarm, alertness, background, blue, building, business, cam, camera, cctv, circuit, city, closeup, control, crime, danger, detection, digital, electronic, equipment, guard, home, industry, len, look, modern, monitoring, observe, outdoor, overhead, police, private, property, protection, record, safety, secrecy, security, sky, spy, street, surveillance, system, technology, television, urban, video, view, wall, watch, white,