Scientists are on the verge of making holographic video chat, or live holo chat, a reality. Last December, researchers at the University of Arizona demonstrated for the first time the possibility of live holographic video transmitted over the internet. It was the first time that a true moving hologram had been revealed, although their images only moved, or updated, once ever 2 seconds. This month (jan 2011) a different American research team at the MIT showed off their own holographic video system, showcasing a moving hologram transmitted in real time that refreshed itself 15 times a second. That is very close to the 20 or 30 fps needed to convey the impression of continuous motion.
Given these breakthroughs, it is now expected that live holochat will become attainable within the next 5 years.