I would like to let you know that SambaPos works perfect with Magnetic Swipe Cards without need to any programming modification. These cards are very cheap 100 only= 15 pound on ebay. You will need to buy a magnetic card reader, ask your hardware vendor, they must have one. Finally, you need to get somebody to program these cards for you or you can buy a card writer (on ebay) and do it yourself. It is quite simple.