Ключевые слова: background, banking, business, buy, buyer, buying, chip, commerce, communication, currency, device, digital, discount, electronic, finance, financial, girl, hand, holding, machine, man, marketing, mobile, modern, money, nfc, online, pay, payment, people, person, phone, pin, pos, purchase, sale, sell, seller, service, shop, shopping, smartphone, store, system, technology, terminal, transaction, transfer, wifi, wireless,