Ключевые слова: app, application, banking, barcode, bill, business, buy, card, cash, cashless, cellphone, close up, code, communication, connection, credit, customer, device, digital, display, electronic, hand, information, internet, machine, mobile, modern, money, online, pay, paying, payment, people, phone, qr, qr code, reader, scan, scanner, scanning, screen, service, shop, smart, smartphone, store, technology, transaction, transfer, wireless,