Use the POS machine to make purchases and scan the QR code to pay.

There are two main ways to make offline purchases with credit cards. First of all, to make purchases at the POS machine, you need to bind your credit card to your mobile phone or other mobile payment device, and then approach the POS machine to make the payment. This method is convenient and fast, and payment can be completed with just a tap of the device. Secondly, by scanning the QR code to pay, you can bind a credit card on WeChat, Alipay and other platforms, scan the merchant's QR code and select credit card payment, and enter the password to complete the transaction. The payment code in Alipay and WeChat can also be displayed and the merchant can scan the code to complete the payment.

Both methods provide convenient and safe payment methods, and consumers can choose according to personal preferences and merchant-supported methods.