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Message: <blockquote data-quote="Ferrix" data-source="post: 2959865" data-attributes="member: 6115">The video is on a flat sheet which comes out of what seems to be a scroll (it is however a stiff sheet).  It is reminiscent of the electronic paper that is coming out, although in a much more advanced video style.The projection equipment is probably cheap, although you don't see it in use very often (except in pool tables) or in the movie where they watch the recording on Miranda which seems to be a holographic projection as well.  Flat screens are much more prevalent.Regarding the taking of 3D images, I imagine it wouldn't be so incredibly bulky but would require multiple camera units to provide such an image, otherwise you won't get proper perspectives and well... 3-dimensionality.  Thus it could be expensive and would probably require a processing unit that combines the various angles taken.</blockquote>