This is very different from Google image search or other traditional image search engines.. TinEye crawls the web ‘fingerprinting’ images and adds the fingerprint to it’s search database. So to search you will provide TinEye with an image, by either URL or upload, and it’ll fingerprint it and compare to all the other millions of images in it’s database to find matches all over the web, it even finds various variations of the image.
The video on their site explains better, so check it out here www.tineye.com
Darran Boyd 
