Virtual reality
Around the same time, Douglas Engelbart used computer screens both as input and output devices. In 1968, Ivan Sutherland, with the help of many students including Bob Sproull, created what was widely considered to be the first head-mounted display (HMD) system for use in immersive simulation applications. It was primitive both in terms of user interface and realism, and the HMD to be worn by the user was so heavy that it had to be suspended from the ceiling. The graphics comprising the virtual environment were simple wire-frame model rooms. The formidable appearance of the device inspired its name, The Sword of Damocles.
Fove
FOVE is the first virtual reality headset that utilizes eye tracking. It was created by a Tokyo-based startup founded by Yuka Kojima (CEO) and Lochlainn Wilson (CTO). Announced in 2014, FOVE's technology uses infrared to track eye movements with accuracy and low latency. The sensors within the device tracks the user's pupils. It allows the user to target and interact with objects by making eye contact with them.