Ключевые слова: alertness, background, big, blue, brother, building, camera, cameras, cctv, city, cloud, control, day, electronic, electronics, equipment, guard, image, industry, lens, looking, modern, monitor, nobody, observe, office, outdoor, outdoors, privacy, protect, protection, record, safety, secrecy, secure, security, sky, spy, sunset, surveillance, system, technology, television, urban, video, view, watch, watching, white, windows,