I previously mentioned a bar code reader for the N80 phone, however, it is rather cumbersome to use.
Enter Kaywa Reader. The scanning is simply impressive, and reads the code in "real time" using the live feed from the camera, rather than taking a snap shoot like the other reader. Once it has focus, it shows the content immediately on the mobile, and transfers about 200 characters in less than a second.
To download the app, go to the page using your phone, rather than registering on the web. This will save you the registration process.