Ключевые слова: antibody, certificate, communication, connection, coronavirus, covid19, covid19 vaccine, device screen, hand, healthcare and medicine, holding, horizontal, illness prevention, immune system, immunization certificate, indoors, journey, luggage, mobile app, mobile phone, one woman only, packing, passport, portable information device, preparation, qr code, smart phone, suitcase, technology, telephone, tourism, tourist, travel, travel destinations, travel insurance, using phone, vacations, vaccination, vaccine passport, wireless technology,