https://www.cnet.com/news/what-is-augmented-reality-magic-leap-hololens-ar-holograms/

That company presentation? An animation beamed to the table in front of you. The next hit video game? Blaster fire shot from aliens hiding behind the sofa.

It goes by a few names: augmented reality or mixed reality (and not to be confused with virtual reality). It's a world where anything can appear in the palm of your hand… well, that is, if you don't mind strapping on some expensive headgear to make it happen.