Google's Mobile Labs crew Feb. 18 launched Google Shopper , which lets users comparison shop for merchandise with their Android phones. People use Shopper by calling up the app on their Android phone and pointing their phone's camera at books, CDs, DVDs, and video games, along with most barcodes to get search results about those items on Google. There's no need to actually press or button or take a picture of the product. Users then tap on search results to get pricing,