Tools like Square's credit card reader and Apple's proprietary iOS retail system make mobile payments possible in the US, but they're hardly streamlined, or widespread. A new Gingerbread tablet from Sharp -- the RW-T107 -- sets out to simplify payments in Japan with its built-in NFC reader. You won't be using your own tablet to pay -- instead, retailers will utilize point of sale apps to process transactions, without a customer ever needing to swipe their credit card. RFID payment cards, like Sony's FeliCa, have been used throughout Japan for the last
