Ключевые слова: alertness, background, big, building, building exterior, camera, city life, communication, control, copy, copy space, corner, corporate, crime, electronic, equipment, guard, house, identity, industry, modern, monitoring, order, outdoor, outside, privacy, private, protection, safety, searching, security, security camera, security system, space, spectator, spy, street, surveillance, system, technology, urban, vandalism, video, wall, watch, watching,