Implement the ZXing Google library in the AA platform to enable users to:
- Scan and verify promotions provided by the AA platform using QR codes or barcodes.
- Confirm payments in affiliated retail companies using code-based authentication or transaction validation.
Requirements:
- Integrate ZXing library and set up initial configuration.
- Provide scanning functionality within the app for users.
- Link scanned data to AA platform's promotion system for verification.
- Connect payment confirmation flow to retail company API.
Benefits:
- Secure and efficient promotion validation for users.
- Streamlined payment confirmation, reducing fraud and manual errors.
Please discuss any implementation constraints, especially regarding data privacy and third-party dependencies.