Augmented Reality (AR) is a computer technology that allows you to place virtual objects on top of the physical items you are holding. It is very similar to holograms seen in sci-fi movies. It can also be used to place virtual furniture over images of a room. The technology was first developed by the MIT Media Lab. The goal of this lab was to create a way for people to interact with digital objects with their movements.
Augmented Reality is already being used for commercial purposes, including making it easier to try on clothing and accessories without leaving the comfort of your home. For example, the IKEA Place app lets you see furniture in a room before you buy it.