There's been other buzz around mobile payments this week. Square released an app called Card Case, which basically can transform a smartphone into a credit card. It's different from NFC technology in that it isn't really a credit card system, but a tab system. Card Case allows customers to save their credit card information in the app, and then "start a tab" when visiting participating merchants.
As NFC typically is aimed at contactless payments--which usually are for purchases of under $25 that don't require a signature--the benefits of the system are limited to certain retailers. While this will be ideal for grabbing a cup of coffee before boarding a plane, it probably wouldn't let you buy the plane ticket.
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