It didn't take long for Visa to react to the three-headed beast of AT&T, T-Mobile and Verizon entering the mobile payments arena. The world's foremost payment processing company has just announced that it's about to start a trial of its contactless payment system in partnership with Bank of America. Kicking off in the New York area this September and lasting through the end of the year, the scheme will most likely involve the MicroSD NFC communicator and