Apple seems to be getting ready for the Holiday season early. The update to the Apple Store App now let’s you pay for your own accessories by just scanning the barcode. You can do all this without the joy of playing Marco Polo with an employee.
Personal Pickup: Buy in the app and choose to pick up your order at any Apple Retail Store. Most in-stock orders are available for pickup within an hour.
EasyPay: Purchase select accessories in store quickly by scanning the bardcode and completing your transaction right in the app. (U.S. only)
Track your stuff: View the status of current and previous orders from the order status section tab in the More Tab
The update requires iOS 4.2 or higher. EasyPay and Personal Pickup requires either an iPhone 4 or iPhone 4S.