A good pointer about mixing phones and barcodes

Ericsson: Barcodes come to mobile phones:
"A number of companies are developing applications and middleware that can turn a standard camera phone into a portable barcode scanner. This combined with WAP and GPRS opens up a world of possibilities for new applications and services. Mobile barcode scanning is being used to improve logistics, allow instant time reporting for working in the field and provide ways to link the physical world to the web."