I have vx520 one with pin-pad. The task is:
- Store virtual money (f.e. litres of fuel) on chip card
- Client can pay with it knowing his pin-code
- Terminal should be available to register and program new cards
Where do I start? Is there any kind of SDK for Verifone terminals? I found an ADK on the official site, but it needs license (their email doesn't work when I write to them). Is there any way to develop my own software without a license?
P.S. I'm using a "SLE4428" smart card--is that OK?