First came augmented reality, using the GPS and camera on your smartphone to layer information from the virtual world onto the real world as displayed via the camera.
Now, Fujitsu has introduced a device that I came across on Mashable that allows you turn any document into a touchscreen that can recognize the actions of your fingers.
Is this an interesting invention or a potentially valuable innovation?
Personally, one potential application I see would be robotic surgery. What do you see?