Ключевые слова: access, accessibility, airport, arena, automatic, block, building, business, card, center, closed, concept, corona, coronavirus, cross, danger, door, doorway, electronic, enter, entrance, entry, equipment, exit, gate, gateway, indoor, infection, isolation, lifestyle, locked, metal, metro station, modern, pass, quarantine, red, road, sick, station, steel, subway, suspension, technology, tourism, traffic, transit, transport, turnstile, warning,