From ABC News:
Shopaholics beware: your addiction just got an official enabler. MasterCard is introducing MasterPass, a new service that will make it even easier to shop and make purchases from virtually any mobile device, whether it’s a smartphone in the dressing room or a tablet at the coffee shop. Read more
... With MasterPass, there’s new functionality like the ability to scan a product barcode while in the store aisle and make the purchase right then and there, within the store’s app.
This capability is similar to similar to Amazon.com’s 1-Click ordering.