For iPhone users Google releases an interesting application today – Google Goggles. It uses pictures to search the web. Goggles recognizes things such as landmarks, books, wine, artwork, and logos. Earlier it was only released for Android phone users.
You can download Goggles for iPhone and Android Phone from these following links
Photo: Getting information of a Book
Some Google Goggles videos
1. Google Mobile App for iPhone, now with Google Goggles
2. Google Goggles