Ключевые слова: app, application, banking, bar code, bill, bills, business, buy, cashless, code, commerce, credit, customer, device, digital, electronic, finance, financial, hand, information, internet, invoice, lifestyle, mobile, money, online, online shopping, paid, pay, paying, payment, payment online, people, phone, purchase, qr, qr code, receipt, scan, scanner, scanning, screen, service, shop, shopping, smartphone, store, technology, transfer, wireless,