Scan code and near field communication (NFC) are likely to be two of the main payment methods of the future. The QR100 series products meet the requirements of both payment options. It uses the Android intelligent OS, which is able to graft different services, cope with customization requirements of different operators, and apply modular design to the operating system and hardware. It also connects to the Internet, optimizes the traditional cashier path, and improves the user experience.