Ключевые слова: access, architecture, arena, automatic, barrier, border, boundary, building, business, city, construction, control, customs, design, detector, door, doorway, electronic, enter, entrance, entry, exit, football, gate, gateway, hallway, hand, interior, metal, metallic, modern, nobody, office, pass, passageway, people, public, scanner, security, skipping, soccer, station, steel, subway, system, technology, ticket, transportation, travel, turnstile,