Grand Challenges for Augmented Reality

In his 1965 article, The Ultimate Display, Ivan Sutherland imagined a future computer interface that blurred the separation between the digital and physical worlds (Sutherland, 1965). At the time, he was making this vision a reality, creating a see-through head mounted display (HMD) that allowed users to see virtual images superimposed over the real world (Sutherland, 1968). The user’s head position was tracked, so the virtual content appeared fixed in space, and a handheld wand could be used to interact with it.