South Korean researchers claim to have made the world's first 360 degree color hologram—a floating Rubik's cube. ETRI, a 16 company consortium led by LG Display division, has created "tabletop holographic display" that can be viewed from all angles.
Its creators assert that it's a true hologram and not a "pseudo hologram that make[s] 3D effects through 2D images."
In other words, it's not a "Pepper's Ghost" illusion famously used for the Tupac hologram. Since the holographic object changes orientation when you move around it—like a real object would—it also differs from "floating 3D-movie" type holograms.
See it in action below:
The research is the result of a 2013 Korean government project to research and develop hologram technology. The effect is produced by powerful lasers that create the 3D object using diffraction, and produces color using the interference between multi-hued lasers.
However, to date, there are significant limitations. For example, the holograph is only 3 inches in size, and it makes use of a complex system of lasers. But of course, this is just the early stage of the research, and ETRI states that they plan to commercialize a 10 inch Holo TV by 2021.