Apple has gotten a patent directly related to shopping, one that will compliment its Passbook, the mobile wallet solution for iOS 6.
The latest patent involves an NFC powered shopping app that will let you make a list by scanning product codes or taking pictures. It will pull up information you want to know like price, quality, ratings, comments, and more. Then you can make your decision and you can check out electronically.
We probably won't be seeing this as a standalone product, rather an option and feature inside Passbook. [USPTO via Engadget]