On the POS machine APP.
1. First, open the personal center of the POS machine APP purchased for Bank of China credit card magnetic stripe card authentication and enter the security authentication page.
2. Then on the security authentication page, find the "Magnetic Stripe Card Authentication" function and click to enter.
3. Then follow the page prompts and enter the card number and password that need to be authenticated.
4. After the final authentication is successful, you can re-transact.