The application is very cool. I can make a 3D barcode with ease (uses minimal bandwidth and easy to follow instruction). The most fun part is I can copy the barcodes link in my blog or other web application to share my code. Be careful not to store too many information inside one barcode. I tried to store my business card information using barcode and when I tried to gave a trial reading using my E71 scanner it failed to read them. The mobile code application should give a notification of how much information can be stored without creating problem when reading them.
For the overall, I like it very much and I'm looking forward for betalabs to develop one which can be used to generate code within nokia handheld devices, especially for my E71.