Ключевые слова: access, accessibility, airport, automatic, barrier, business, card, checkpoint, city, closed, contemporary, control, design, detector, door, doorway, electronic, enter, entrance, entry, equipment, exit, gate, gateway, green, indoors, interior, lock, metallic, metro, nobody, passageway, passenger, railway, reader, security, station, steel, subway, system, technology, ticket, tourniquet, train, transport, transportation, turning, turnstile, turnstiles, underground,