with some image processing techniques i picked up from my AI studies ... got the /barCode image reader to work on a Pocket PC using an HP Photosmart Mobile Camera. its using the Bistia camera wrapper and Compact Framework v1. all you do is take a picture of a barcode, and then it does the recognition routine and displays the result in a MessageBox.
the scenario is that you would use this with a Smartphone (or PPC Phone Edition) at a bookstore. then it would send the ISBN to the Amazon.com Web Service to lookup what their price was. the pic on the left shows the image captured from the camera with minimal preprocessing. the pic on the right shows the transformed image used for recognition, and the MessageBox displaying the ISBN #.