Can anyone help me with what hardware I would require, and where to purchase. I am looking for an Android based Headrest Monitor, which would have GPS, and 3g(cdma). I would need a 7-10 inch five wire resistive touch screen(rugged glass/plastic). I would need to attach a 3 track credit card reader, and Thermal Panel Printer(via rs232). I have no idea on where to begin to look.