Ключевые слова: cable, camera, cctv, control, detection, digital, eco, ecology, electronic, environment, environmental, farm, guard, high, industry, lens, look, modern, monitor, nature, observe, outdoor, police, precaution, privacy, private, property, protect, protection, record, road, route, safety, secure, security, sky, spy, surveillance, survey, system, technology, video, view, walk, wall, watching, way,