Smart Codes such as this one (supplied by QMCODES - thanks Antony!):

allow you to use your mobile phone camera to link you directly to an m-site, (providing you have off-deck browsing activated on your phone of course). In effect, it makes print media interactive allowing an ad or even an editorial piece to provide deeper background on a handset, and of course track that interaction too.

What you need:

• A Smart Code reader application on your phone

• e.g. the i-Nigma reader, or
• the Kaywa reader, or
• a Nokia N-series phone with the ‘Barcode’ reader application
  (often placed inside the ‘Office’ folder).

What you do:

• Run your Smart Code reader application
• Take a photo of the Smart Code
• What while the reader does its decode
• Click ‘go’ (or similar) when it displays a URL
• Enjoy the m-site.

What you get:
If you use the Smart Code above, here’s a picture of what you should get on your phone’s browser:

Its a much simpler way of entering complex URLs into a phone, and because it uses the consumer’s own phone camera, it should also make visiting m-sites a more human-friendly process - just take a picture.