Home holography video chat may sound like the stuff of Star Wars, but it's closer than we think. Holography, like traditional 3-D filmmaking, has the end goal of a more immersive video experience, but the tech is completely different. 3-D cameras are traditional, fixed cameras, which simply capture two very slightly different streams to be directed to each eye individually--the difference between the two images creates the illusion of depth. If you change your position in front of a 3-D movie, the image you see will remain the same--it has depth, but only one perspective. (Curious about glasses-free 3-D? Check out our interactive primer.) A hologram, on the other hand, is made by capturing the scatter of light bouncing off a scene as data, and then reconstructing that data as a 3-D environment. That allows for much greater immersion--if you change your viewing angle, you'll actually see a different image, just as you can see the front, sides, and back of a real-life object by rotating around it. "If holography is done right," says Bove, "it's really quite stunning."