What if we could look closer into a picture and watch the objects in the background get clearer?

What we've attempted here was to use the webcam as a distance measurement device, thus changing the focus of the images according to your distance from your screen.
The code could use some refinement, because for now it only works if you are sitting against a light-colored background, but it's a good start. And, oh, yes, you'll need a webcam. Enjoy :-)