Ключевые слова: accounting, app, application, background, barcode, blue, cellphone, cellular, code, communication, concept, connected, device, digital, icon, id, innovation, interface, internet, isolated, isometric, media, mobile, mobile phone, money, new, online, payment, phone, qr, qr code, scan, scanner, scanning, screen, security, smart, smartphone, system, tech, technology, verification, wallet, wireless,