I am a C# developer and have written a bespoke POS solution for my company coded in C# (Winforms currently).
I'm looking to integrate tethered Ingenico card terminals (over USB) into it for card payments. I am needing a DLL (ideally coded in C#/ASP.net) to handle the API calls to the card terminal from my app.
I'd like to be able to 'send' the amount to be purchased to the card terminal for display to the customer. The terminal itself will handle the card processing but I need my app to await a callback from it with the authorisation code from a successful transaction along any other Ingenico SDK statuses that may be applicable (timeouts or declines etc).
22 freelancer đang chào giá trung bình £525 cho công việc này
Okey, can we talk more on requirement in one to one chat ? Regarding skills, you can totally rely on me. I need to speak with you on few points. Let me know if you have little time today.