From there, you may need to adjust the scan rate (a setting that the PowerStrip tool allows you to modify) until you get a stable picture.

July 20, 2009-visitors to the World Bank's website used to have to scan more than 20 sites and hundreds of pages to get a complete picture of the Bank's role in climate change.

Shoppers can scan the item's bar code, take its picture, say its name or type out the details on the iPhone.