Ключевые слова: alarm, background, big, building, cam, camera, cctv, city, control, crime, danger, electronic, equipment, guard, home, industry, lens, look, modern, monitor, monitoring, observe, outdoor, privacy, private, property, protect, protection, record, safe, safety, secure, security, spy, street, surveillance, system, technology, television, urban, usa, video, view, wall, watching, webcam,