Ключевые слова: alarm, background, blue, brother, camera, cctv, circuit, colours, communication, connect, connection, control, crime, digital, electrical, electricity, electronic, equipment, examine, examining, group, guard, horizontal, industry, lens, modern, monitor, monitoring, person, pole, privacy, protect, protection, record, safety, secure, security, sky, spy, surveillance, system, technology, urban, video, view, watch, watching, white,