Ключевые слова: adult, airport, baggage, binary, blockchain, board, check in, citizen, computer, concept, data, departure, digital, document, electronic, flight, hand, holiday, id, interior, international, internet, journey, legislation, modern, national, paperless, passenger, passport, people, protection, regulation, safe, safety, secure, security, smartphone, technology, terminal, ticket, timetable, tourism, tourist, transportation, travel, traveler, traveller, trip, vacation, virtual,