Ключевые слова: 5g, advertising, app, application, bar code, barcode, business, buying, check, code, communication, concept, connection, customer, data, device, digital, electronic, hand, holding, information, internet, label, mobile, mobile phone, money, online, online shopping, pay, paying, payment, phone, price, product, purchase, qr, qr code, reader, retail, scan, scanning, screen, shop, smart, smartphone, society, store, technology, telephone, wireless,