BVD Gr. Jor
http://lifehacker.com/how-to-augment-your-computer-with-an-ipad-513479575
If you're looking for a general purpose trackpad, we like Mobile Mouse. On a basic level, Mobile Mouse turns your iPad into a trackpad mouse with multi touch, but it does a ton of other things, including, application launcher, working as a file browser, media remote, web remote, presentation remote, numeric keyboard, and more. Essentially, it turns your iPad into a smart track pad that can also operate as an extension to your keyboard.