VeriFone added a new wrinkle to its ongoing battle for mobile payment supremacy yesterday, with the announcement of Payware Mobile Enterprise for Tablets -- a peripheral that will allow retailers to process transactions directly from any slate. Much like the company's Payware Mobile system, VeriFone's latest product involves a magnetic card reader and accompanying app that can turn any iPad or Android tablet into a handheld checkout unit. Geared toward larger enterprises, the new device al
