You can download Microsoft’s Tag Reader from http://gettag.mobi/
Download the app either to your PC and install on your phone or directly point your mobile phone at the above URL and install it straight from there.
With the Microsoft Tag application, just aim your camera phone at a Tag and instantly access mobile content, videos, music, contact information, maps, social networks, promotions, and more.
Scan the tag shown below with the reader on your phone and will directly go to my blog…cool J
NOTE: The camera on your phone should support the minimum resolution required to be in scan mode. Anything less than 176×144 is too small to comprehend a barcode in an image reliably enough for a wide range of lighting and optical conditions.