Interaction with thin Air.
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Just spotted this on CDMotion this morning.... really cool and wanted to share it.
[ Interaction in Thin Air: New Research from Microsoft, MIT Uses Magnets, Sound, Space](http://createdigitalmotion.com/2012/05/interaction-in-thin-air-new-research-from-microsoft-mit-uses-magnets-sound-space/)[ ](http://createdigitalmotion.com/2012/05/interaction-in-thin-air-new-research-from-microsoft-mit-uses-magnets-sound-space/)
