H&M stores in Europe have already started putting barcodes in magazines and on billboards so that customers can take a pic of items with their cellphone cameras and get more product info later.
Google's new 2D barcodes may be a bit different, but they basically have the same outcome. Webmaster Tips reports that these new barcodes, which have already been spotted in Japan, contain info that can prompt your phone's web browser to go to a certain URL. So say for instance you wanted to know more about a new laptop, just take a picture with your cell phone and it will direct you to the product's website — neat, right?! Source