Ключевые слова: advertising, app, application, banking, bar, barcode, business, cash, cashless, code, coding, communication, concept, connection, customer, data, device, digital, display, electronic, financial, hand, illustrative, information, internet, mobile, money, online, pay, payment, person, phone, price, product, qr, qrcode, reader, retail, scan, scanner, scanning, screen, shop, smart, smartphone, store, technology, telephone, transaction,