Ключевые слова: 20s, apron, assistance, beautiful, bill, cafe, cafeteria, card reader, caucasian, cellphone, code, coffee shop, communication, confidence, connection, consumerism, contactless payment, counter, customer, device, electronic, expertise, express pay, female, guidance, happiness, holding, job, keypad, machine, male, man, mobile payment, mobile phone, mobile wallet, nfc, occupation, paying, payment, phone, pin, restaurant, retail, scanning, server, service, smartphone, standing, swiping machine, table, technology, terminal, together, transaction, waiter, wireless technology, woman, worker, young adult,