This is very cool.

Along with the ubiquitous bug fixes seen in practically every iOS app update, version 3.2.1 of Amazon’s retail app includes a feature called “Flow” which lets users quickly and easily search for products using their iOS camera.

Unlike the previous addition of a barcode scanner in October 2010, Flow lets users identify products by simply pointing their iPhone in the right direction, and then letting the image recognition tools do the rest of the work.