Virtual reality
The 1990s saw the first widespread commercial releases of consumer headsets. In 1991, Sega announced the Sega VR headset for arcade games and the Mega Drive console. It used LCD screens in the visor, stereo headphones, and inertial sensors that allowed the system to track and react to the movements of the user's head. In the same year, Virtuality launched and went on to become the first mass-produced, networked, multiplayer VR entertainment system. It was released in many countries, including a dedicated VR arcade at Embarcadero Center in San Francisco. Costing up to $73,000 per multi-pod Virtuality system, they featured headsets and exoskeleton gloves that gave one of the first "immersive" VR experiences. "Computer Gaming World" predicted "Affordable VR by 1994".
Industrial augmented reality
Although the origins of Augmented Reality dates from the 1960s, when Ivan Sutherland created the first head-mounted display  it did not gain strength until the early 1990s, when the David Mizell and Thomas Caudell developed the first industrial AR at Boeing. They used a head-mounted display (HMD) to superimpose a computer-generated diagram of the manufacturing process with a real-time world registration and the user's head position calculation. They coined the name Augmented Reality to this technology.
Contemporary several prototypes were proposed to demonstrate AR's application to manufacturing: a laser-printer maintenance application was proposed in 1993 by Steven K. Feiner and coauthors by introducing the concept of knowledge-based AR for maintenance assistance (KARMA). Whitaker Ross et al. proposed a system to display the name of the part pointed by the user in an engine.