Ключевые слова: alarm, antenna, around, away, background, black, camera, cctv, circuit, concepts, control, danger, deterrent, electrical, electronic, equipment, guard, home, illustration, industry, isolated, lens, looking, monitoring, nobody, object, outdoors, privacy, private, protect, protection, rdio, record, remote, render, risk, safety, secrecy, secure, security, surveillance, system, technology, theft, video, view, vision, watching, wifi,