look at this!
http://www.delicious-monster.com
you can download the program (for Macs right now...I think the cost is
~ $40) and then all you do is hold up the barcode of your books to
your webcam & it logs your books into your own digital library...!
and the best part is you actually see your books on a "virtual shelf"click on the first picture to see an example...
have a good day!