Google has released an update to the Google Mobile search app for the iPhone, iPod touch and iPad adding support for its Google Goggles search-by-image technology. Google Goggles allows users to take a picture of an object using the camera on an iPhone 4 or iPhone 3GS and perform a search based on the image. Goggles will analyze the image and highlight the objects it recognizes at which point the user can tap on the image to perform searches on those objects. Goggles is a Google Labs feature and remains in testing, although it reportedly works well for objects such as landmarks, logos, and the covers of books, DVDs and games. The feature requires an auto-focusing camera and is therefore only available on the iPhone 4 and iPhone 3GS and requires iOS 4 or later. Google Mobile is available from the App Store as a free download.