After ordering or finishing the meal, the customer can make the settlement by himself through the secondary screen of the dual-screen pos system. After confirming the order, the cash register will generate a QR code for payment after settlement, and the customer can scan it with WeChat or Alipay. code payment. The dual-screen operation of the dual-screen pos system makes the entire ordering process smoother and smoother, saving a lot of precious time for both merchants and consumers.