We’ve mentioned NeoMedia’s PaperClick before, but there’s now another software application for cameraphones that let’s you comparison shop from your phone. Both NeoMedia’s PaperClick and ScanBuy’s ScanZoom, for example, let you walk into a bookstore, snap a picture of any book’s barcode, and then get pricing information on how much Amazon and/or others are selling the book for. ScanBuy says that ScanZoom will also work for all sorts of other products, like CDs, gadgets, etc. and that it should work with Nokia’s 7650, 3650, and 660 cameraphones, and Hitachi’s G1000 and Samung’s i700 Pocket PC Phones. We’re still waiting to see a live demonstration of either PaperClick or ScanZoom, but they work as promised this sort of thing will make it even tougher for stores to compete with online retailers when it comes to price.