Ключевые слова: alarm, background, big, bokeh, brother, building, camera, cctv, city, close up, concept, control, crime, day, defocused, digital, electronic, electronics, equipment, exterior, eye, guard, illustration, industry, light, monitoring, observe, privacy, private, property, protect, protection, record, safety, secure, security, signal, space, speed, spy, surveillance, system, technology, television, traffic, transportation, video, view, wall,