Ключевые слова: application, barcode, business, buy, capture, cash, cashier, cashless, checkout, code, coding, commercial, concept, credit, customer, data, device, digital, display, easy, hand, holding, information, internet, mobile, mobility, money, online, pay, paying, payment, price, product, purchase, qr, qrcode, reader, retail, scan, scanner, scanning, screen, shop, smart, smartphone, store, tag, technology,