I'm developing credit card processing in our Point-of-Sale software, and would like to find a community where I can get some help. Is this the right one? If not, what Stack Exchange community would I need?
For example, a question I might ask would be something like "Is there a difference in processing rates when using an EMV chip card as opposed to swiping?" or "Can I prevent a transaction from completing if the Avs lookup was not successful?"
Those last two examples are quite vague, but a more realistic question would be "How quickly do debit transactions occur on consumer accounts?"