Ключевые слова: activities, alert, area, attention, barbed, barbed wire, board, camera, cameras, cctv, crime, digital, electronic, equipment, facility, fence, graphic, guard, icon, illustration, information, isolated, message, modern, monitored, monitoring, observation, observe, private, property, prosecution, protect, protected, protection, record, recorded, safety, secure, security, sign, surveillance, symbol, system, technology, video, warning, wire,