Square, the start-up mobile payment service that aims to bring credit card transactions to anyone with a smartphone, has formed a partnership with Starbucks, a move that vastly increases Square's reach and visibility. According to the NY Times, "This fall, Square will begin processing all credit and debit card transactions at Starbucks stores in the United States and eventually customers will be able to order a grande vanilla latte and charge it to their credit cards simply by saying their names. Though smartphone payments have a long way to go before they replace wallets altogether, Starbucks’s adoption of Square will catapult the start-up’s technology onto street corners nationwide, and is the clearest sign yet that mobile payments could become mainstream. ... At first, Starbucks customers will need to show the merchant a bar code on their phones. But when Starbucks uses Square’s full GPS technology, the customer’s phone will automatically notify the store that the customer has entered, and the customer’s name and photo will pop up on the cashier’s screen. The customer will give the merchant his or her name, Starbucks will match the photo and the payment will be complete."