This, or something like this is the future of touchscreens. Until you can operate them by touch touchscreens have limited use. [
Link]
Now researchers at Carnegie Mellon have developed touch-sensitive displays with physical buttons that "pop-out" from the surface. CM's prototypes pump air through geometric-shaped holes to create concave or convex "buttons" on a screen covered with a semi-transparent latex -- IR sensors and cameras detect finger placement while a projector cast images (like numbers and graphics) onto the display. It can even sense press-force by monitoring changes in air pressure.
Video of this in action.
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