Face it, the past few decades of flat holograms have been a sham. Baseball cards? Security logos? Software piracy protection? This isn't what sci-fi had in mind at all. Thankfully, some University of Arizona scientists are getting the technology back on track with a new three-dimensional holographic display. What makes this one special is that the display is dynamic -- it can be rewritten with an entirely new image in a few minutes. Obviously the refresh rate's going to need some work before we're all chugging along on a holographic workstation, but it's certainly a start. The current prototype is 4-inch by 4-inch, and only displays in red, but the researchers believe a full color display is feasible, and they're already at work on a 1-foot by 1-foot version.

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Dynamic holographic displays are finally here, a couple decades late