How to automatically (programmatically) enter the amount on a bank payment terminal?

Question

Fintech

A person takes goods in a store, the software determines which goods a person has taken, forms a virtual basket with goods and the amount of the purchase. How can this purchase amount and product items be automatically transferred to the payment terminal so that the seller does not need to enter purchase data in the POS terminal, while the buyer only has to bring (insert) his bank card to the terminal to pay for the purchase? That is, in fact, you need to skip the step of entering the commodity items, the purchase amount, the payment method, or the purchase amount on the payment terminal itself by the seller in the POS-terminal. Prompt, please, as it is more correct to make it, where to dig. Perhaps it's easier to buy an evotor and write your own application for it or integrate it with some payment terminal?

Answer 1

By USB, COM cord.

Answer 2

Maybe it's easier to buy an evotor

There are such software solutions:

• Contour Market
  
• SBIS Retail
  

Both are far from ideal. But if the requirements are small, then it will do. VLSI support is somehow better, imho.