Holding the piece of paper is a little silly I agree, but what if they had 2 screens. The flat table and another screen a little bit above the table and angled toward the user to display the second image. Then they could put a generic image on the bottom screen like a map and the angled screen could be a zoomed in image of that map. So you could drag your finger across a zoomed out map and see the streets in the area you're touching. I think there's alot of things that can be done with this outside of holding paper.
Slashdot Mirror
Holding the piece of paper is a little silly I agree, but what if they had 2 screens. The flat table and another screen a little bit above the table and angled toward the user to display the second image. Then they could put a generic image on the bottom screen like a map and the angled screen could be a zoomed in image of that map. So you could drag your finger across a zoomed out map and see the streets in the area you're touching. I think there's alot of things that can be done with this outside of holding paper.