QR Payment

Scan a QR code displayed on the terminal or show their own QR code to complete a payment.

Sequence Diagram

Process Flow

1. User starts a transaction on the POS.
2. POS creates a QrPaymentRequest() object.
3. POS calls sendRequest() to send payment request.
4. SDK sends the encoded request to Smart Terminal.
5. Depending on the scan option:
   • If customer scan, Smart Terminal generates QR code.
   • If merchant scan, Smart Terminal launches front/back camera for scan purpose.
6. Smart Terminal returns response [305 : Scan QR] to SDK.
7. POS calls receiveResponse() for response handling.
8. SDK returns the response value.
9. POS displays result on screen.

18. Depending on the scan option:
    • If customer scan, allow customer scan QR code from terminal.
    • If merchant scan, user to use camera on Smart Terminal to scan QR code from customer’s device.
19. Smart Terminals displays “Approved”.
20. Smart Terminal returns response [100 : Approved] to SDK. You may refer to Response Codes.
21. POS calls receiveResponse() for response handling.
22. SDK returns the response value.
23. POS displays result on screen.