The official website is not very usable.<p>Watch Video 3 (http://www.dwp.qaop.net/gallery.php?dir=media/videos) to get an idea of how it works.<p>An explanation of the concept is at http://www.dwp.qaop.net/concept.php?lang=en&dir=concept or you can visit the main project page http://www.dwp.qaop.net/?lang=en