First, there are many QR codes that can be used to swipe credit cards, such as Alipay receipt code, micro-credit receipt code and UnionPay wallet. Generally speaking, the merchant's payment code can support credit cards, but the personal payment code can't. However, the merchant's receipt code must enable the corresponding function of the credit card, otherwise it can't be used, and we need to pay attention to the fact that merchants need to pay a certain fee when enabling the credit card receipt function, which is also the reason why many merchants are unwilling to enable credit card receipt, because it increases the use cost of merchants.

Second, take the processing flow of Alipay receipt code as an example:

1. Open and log in to Alipay APP, and then search for "merchant service" on the home page.

2. After entering the merchant service, click "Merchant Tools-Collection Code" in turn and apply according to the page prompts;

3. After obtaining the Alipay receipt code, find and open "Flower Receipt" in the merchant service, and you can pay by credit card.

Operating environment:

Brand model: iPhone 13

System version: iOS 15.0

App version: 10.2.50

3. Steps for WeChat to apply for payment code:

1. Step 1: Find WeChat on our mobile phone and open it. After opening, look at "I" in the lower right corner and click Open;

2. Step 2: We click "I", the "wallet" option appears on another brand-new page, and then click in;

3. Step 3: After opening the wallet, there is a "collect and pay" option in the upper left corner. Click the "Payment" option to enter another page;

4. Step 4: After entering the "Collection and Payment" page, we find the "QR code collection" option among the following options, and click Enter;

5. Step 5: After clicking "QR code to collect money", you will see a QR code for collection, and there is a "small collection account book" below, so we can click it in;

6. Step 6: After clicking in, we will find the "official receiving code" in the middle of this page and click in;

7. Step 7: After entering, you will see three different versions of QR codes of businesses that can apply.

8. Step 8: Click "Standing Board" to enter. We will find a green "Apply Now" option at the bottom of the page. We click to enter;

9. Step 9: After clicking "Apply Now", you will see a page for us to fill in the name of our enterprise and business, then we will enter the correct information and click Next;

10, Step 10: This step is to fill in our own receiving information like we usually fill in the receiving address, and click Pay Now to wait for our receiving code to arrive at the store.

Operating environment:

Brand model: iPhone 13

System version: iOS 15.0

App version: 8.0. 16