I'm getting pretty excited about mobile barcode scanning on windows mobile. In the states there are a few applications that allow you to use your camera as a barcode scanner. What's particularly cool and different about windows mobile devices is that they are well-attuned to "autoscan," which means when you launch the application, you don't even have to push a button to take a picture. Check out http://mobilebarcodesrock.blogspot.com. It describes some ways this technology might be used.