"Commander Cody, the time has come, execute order 66," said Darth Sidious as he instructed Commander Cody to order him the special fried rice from Noodle Palace. A long time ago in a galaxy far, far away, sending a hologram message was as throwaway as sending a text. But the hologram technology used in Star Wars isn't so far, far away any more.
The technology needed to make actual, 'Help me Obi-Wan', type holograms is still in the developmental stage, but a holographic 'being' appearing in the real world is very much a possibility thanks to augmented reality headsets like Microsoft's HoloLens.
What makes this even more exciting is the fact that Lenovo is actually working with Disney on a headset that will allow the user to experience HoloChess, as played to kill time on the Millennium Falcon with Han and Luke, or wield your own lightsaber.
If you're not satisfied unless it's an actual hologram, that technology is in the works too. A company called Asukanet demonstrated a new interactive hologram at the 2013 CEATEC show. The device that displays the hologram is called an Aerial Imaging Plate (AIP), which combines reflective surfaces with a tablet interface. A 'floating' hologram is presented and the user can interact with it as they would any real life tangible object.
The AIP then detects where your hand is in relation to the hologram and makes the hologram respond accordingly. The actual image can only be seen from one angle, or 'sweetspot', which Asukanet believes is an advantage because it gives the user more 'privacy'. Ewww.
The fact that you can only see it from one angle is actually a fairly major limitation of holography, and one that a South Korean team has managed to crack. In October 2016 the team published a paper claiming that it was able to create a 3D image that was viewable from any angle.