Apple's iOS is now being blessed with Google Goggles which will now enable owners of the venerable smartphone to take photos with their handset's camera – and have the application perform a search on it. Actually, Google Goggles is included with the Google Mobile App for the iPhone, so you'll need to download that to launch Goggles.
Currently, the only iPhone version that's supported by it is for English speaking users – so everyone else is out of luck for now. As for handset support, Google Goggles will run on either the iPhone 3GS or 4 – just as long as iOS 4 is on the handset. So if you ever wanted to learn more about something, you can simply point your camera on it and let Google Goggles do all the work for you.
source: Google Mobile Blog