Ключевые слова: access, accessibility, airport, automated, automatic, barrier, boundary, business, card, check, checkpoint, closed, control, design, door, doorway, electronic, enter, entrance, entry, equipment, exit, forbidden, gate, gateline, gates, gateway, metal, metro, modern, office, pass, passage, passenger, public, railway, secure, security, station, stop, subway, system, technology, ticket, tourniquet, transportation, turnpike, turnstile, turnstiles, underground,