Now we just need a holoprojector to put the images in the actual environment instead of on a screen.
the closest ive seen for that is made by little jets of smoke coloured by multipoint projectors and that was a couple of years ago we are getting there fast 
...now for the first real ''replicator'' http://blog.reprap.org/
i think this embryonic technology is gonna change how we manufacture simple objects a few years from now....
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