Holography

http://en.wikipedia.org/wiki/Holography
http://starwars.wikia.com/wiki/Hologram

http://science.howstuffworks.com/hologram.htm
http://en.wikipedia.org/wiki/Holography#Holography_vs._photography

http://gizmodo.com/5902625/tupac-hologram-wasnt-a-hologram, http://arstechnica.com/science/2012/04/tupac-hologram-merely-pretty-cool-optical-illusion/, http://www.theatlantic.com/entertainment/archive/2012/04/hologram-tupac-was-inevitable/255990/, http://www.mtv.com/news/articles/1683173/tupac-hologram-coachella.jhtml