What's the latest development in Holographic display?

[Moose_Ryder]

I don't know where to post this so here it is.

I've googled it, found something interesting by USC Graphic lab, turns out it's a rotating mirror, emulating a holographic displayer, but fair enough, it's still quite amazing.

http://www.wired.com/gadgetlab/2008/06/usc-lab-creates/

Is there anything that does not require specific medium? For example, projecting in the middle of the air? I know it may not be scientifically possible.

 

[Greg Bernhardt]

Moving to tech.

holographic vapor displays have been around for several years now, but that is all I know about.