Ключевые слова: business, buy, cafe, card, cashier, caucasian, cell, checkout, connection, contact, contactless, counter, customer, digital, electronic, female, field, hand, hotel, indoors, interior, machine, male, mobile, money, near, nfc, owner, pay, paying, payment, people, phone, purchase, reader, restaurant, retail, scan, serving, shop, smartphone, table, technology, terminal, transaction, transfer, waiter, wallet, wireless, woman,