Many 3D cameras and scanners produce rough images, especially as they get smaller and cheaper. You often need a big laser scanner just to get reasonably accurate results. If MIT researchers have their way, though, even your smartphone could capture 3D images you'd be proud of. They've developed a technique that uses polarized light (like what you see in sunglasses) to increase the resolution of 3D imaging by up to 1,000 times. Their approach combines Microsoft's Kinect (or a similar depth camera), a polarized camera lens and algorithms to create images based on the light intensity from multiple shots. The result is an imager that spots details just hundreds of micrometers across -- you'd be hard-pressed to notice any imperfections.