![[H]ardOCP](/images/blank.gif){kind=small}
Cheap DIY Multitouch Pad
Got a cardboard box, a webcam, tape and some glass? You can make your own homebrew multitouch pad.
When you place you fingers on the surface, shadows are created where your fingers are. The webcam sees these shadows and sends the image to the tracking software which tracks the shadows as they move around. It's really that simple!