We used the demo version of the company www.eposnow.com. It was quite good and therefore we decided to purchase it. We installed everything, but something was with this system. It simply stopped to work after 2 days. We called to the customer services and the tech arrived to check it. He told us that the system wasn’t properly installed at the beginning, but we didn’t everything as it was mentioned in the instruction. So, the system wasn’t as good as we though, and after couple of months we stopped to use it.