Ключевые слова: app, application, barcode, business, cashless, client, code, commercial, connectivity, convenience, customer, design, device, digital, economy, efficient, electronic, finance, financial, futuristic, gateway, innovation, interaction, interface, internet, mobile, modern, online, payment, purchase, qr, retail, scanning, secure, security, shopping, smartphone, solutions, tech, technology, techsavvy, transaction, transactions, userfriendly, wireless,