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Researchers at Tokyo University have come up with a technology that is a first and significant step away from the mouse and keyboard – touchable holograms. [Hiroyuki Shinoda, Professor, Tokyo University]: "Up until now, holography has been for the eyes only, and if you'd try to touch it, your hand would go right through. But now we have a technology that also adds the sensation of touch to holograms."
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So, this is not a tractor beam at all, since it pushes rather than pulls, doesn't work in space and is only good for moving glass beads.