Ключевые слова: alarm, alertness, background, building, business, camera, cctv, control, crime, danger, digital, electronic, equipment, guard, home, indoor, industry, lens, look, modern, monitoring, observe, office, outdoor, privacy, private, property, protect, protection, record, safe, safety, secrecy, secure, security, spy, surveillance, system, technology, video, view, watch, watching, white,