Examples highlighted by Google include landmarks, books, business cards (add to contacts or do a search), works of art, wine labels, logos, and barcodes.
"Currently, it's not so good when taking pictures of animals, plants, cars, furniture, or apparel," warn Google officials.
Search results may include traditional web search matches, similar images, and more. Where appropriate, they may also include links to Google Product Search and Google Book Search.
Where a good GPS lock is available, Google Goggles can overlay the live camera image with information about nearby points of interest such as businesses. There's no need to actually take a photo - the 'viewfinder' mode suffices.
Google Goggles requires Android 1.6 or later.