Who has done bank card payment procedures in supermarkets, teach me!

8275357pan

Our company makes POS software for supermarkets, and now we want to add support for bank card and credit card payment, but I have no idea. Is there any brother who has done similar procedures and gave me pointers ... Thank you.

刀舞者

This, I think it is like this, the bank must provide you with an interface program, you need to make a program to communicate with their excuse program, and then you communicate according to the established protocol

prosisi

It's actually very simple, this kind of program is a socket communication...
After the bank and the merchant have an agreement, what you deal with is very simple, just send the accno and pwd, and the amount to the bank's front-end machine through the POS machine (some banks also require 23-track data), and you don't need to control the transaction process.
The data that may need to be sent are listed below
   accno, pwd, [2,3 track data], amount, merchant number,
This interface requires the interface given to you by the bank.

Don't worry, this is very easy, in short it is socket communication. The interface is different from bank to bank, and from place to place, and it is different from UnionPay.

prosisi

If there is a communication middleware, use their middleware :)