Ключевые слова: access, accessibility, airport, automatic, barrier, boundary, building, business, card, check, checkpoint, city, closed, control, design, detector, door, electronic, enter, entrance, entry, equipment, exit, gate, gateway, interior, metal, metallic, metro, modern, office, pass, passage, passageway, passenger, public, railway, security, station, steel, subway, system, technology, ticket, tourniquet, transport, transportation, turnstile, underground, urban,