Apple recently filed a patent that makes touch controls disappear -- literally. The patent (No. 8,303,151) is for something called "microperforation illumination," and while the name is catchy, the technology is actually rather complex.
First you pick a non-display surface of a device like a laptop. For this example, let's just say the top of the laptop's lid. Then, using microperforations in the surface itself, you pass light through the material, making a shape appear. Combining this idea with touch controls means you could soon have "inv
