I know some of us have played with this idea before, and after seeing an article about it today on slashdot, I found this site:
http://www.cedarnet.org/smartware/Hardware/PantryPod/
It uses the Cuecat barcode scanner, pretty cool!
http://www.cedarnet.org/smartware/Hardware/PantryPod/
It uses the Cuecat barcode scanner, pretty cool!