Digital Barcodes otherwise known as QR (Quick Response) and DM (DataMatrix) are a very cool way to access mobile web services, all you do is snap the special code with your phone and the Barcode software will reveal the information held inside the code.

@BullyingUK is the first charity in the UK to use the technology you can see it in action on their Anti-bullying Poster Creator, create a poster, save it to the gallery and then print it. Each poster has two QR codes one to access their mobile site m.bullying.co.uk and the other to download a copy of the poster to your phone.

The Barcode app can be downloaded via this iTunes link, once installed open the app and take a picture of the QR code follow the on screen prompts and the code will be translated.

Note that scanning codes works best on the new iPhone 3GS as older iPhone's have a fixed focus on the camera lens that makes it difficult to capture the code with high enough accuracy.