Most people in my area have been exposed to Square from other vendors, have seen commercials, or have it themselves.. and know it is a legitimate transaction method. I personally use a 8.9" Samsung tablet to process the transactions in the office, and a Samsung Galaxy SIII when on the road. I have had zero problems or concerns from customers so far, in fact, the first-timers get all excited to be signing a tablet and watch their card get swiped.. I can honestly say I am excited to be taking their money, so it is a win win situation