Big news this week as Starbucks coffee drinkers can now use their smartphones as a payment method at nearly 6,800 of the Seattle-based coffee shops nationwide. The app allows users to attach Starbucks giftcards to a user’s Blackberry or iPhone and then scan a barcode on their phone at the point of sale, and can also be charged with value via PayPal or any major credit cards. The message coming out of Starbucks HQ seems to be that they’ve opted for a barcode-based payment system today, but are planning to take this technology in some pretty interesting directions, such as Near Field Communication (NFC) in the future. Starbucks also has the ability to add value to its customers reward cards for taking surveys, and will now presumably be able to complete this entire process of presenting a survey offer, accepting customer responses, adding value to the customer loyalty app and accepting payment all on a single smartphone. The functionality being utilized for this rewards app is very similar to the Digital Wallet software available from companies like Google and Accelitec, and the fact that Starbucks has now taken the lead should serve as sign to other brands and retailers that now is the ideal time to be targeting customer loyalty by creating and launching rewards applications for smartphones.