One of the winners of the Android Developer Challenge, ShopSavvy uses the G1’s camera and GPS chip to compare prices of everyday products. To use it, you open the application, select “Search for a product,” and scan the product’s bar code with the viewfinder. The application searches a database for the product you’ve scanned and lists the prices other outlets are charging for the same item, both online and in your local area. It uses the G1’s two-pronged location feature to figure out where you are.
