Ключевые слова: alarm, big, blue, brother, building, cam, camera, cameras, cctv, city, cloud, color, control, day, electronic, equipment, guard, home, house, image, industry, lens, looking, modern, monitor, monitoring, nobody, observe, office, outdoor, privacy, private, protect, protection, record, safe, safety, secrecy, security, sky, spy, surveillance, system, technology, television, urban, video, wall, watch, watching,