Ключевые слова: access, airport, architecture, barrier, card, closed, control, corona, danger, design, door, doorway, electronic, elevator, entrance, entry, epidemic, event, exit, gate, gateway, hall, indoor, infection, interior, isolation, lift, metal, modern, no, pandemic, passage, problem, public, quarantine, railway, red, security, sign, social distancing, station, steel, subway, system, technology, tourniquet, transport, turnstile, underground, walk,