I have no experience with POS systems, but my client wants me to built a system that will read a bar code off a card, mix that information with the information from the sale, and send the whole package to his server via the internet. The client wants to sell this solution to retailers who already have POS systems, and I am sure each client will have a different POS system.
Any ideas or resources you know of that could help me understand how to have our hardware (the barcode reader) interact with POS systems?
Any ideas or resources you know of that could help me understand how to have our hardware (the barcode reader) interact with POS systems?