How to integrate a POS terminal with a website?

Question

Payment terminals

Tell me how you can integrate a terminal for paying with a card with a website?

The meaning is as follows:
1. An order is created on the site
2. Information about the order is transmitted from the site to the terminal
3. Payment is made by card through the terminal
4. The terminal returns the result of the payment to the site

Answer 1

kkmserver