A visitor tries Sony's "Project Morpheus" virtual reality headset at an exhibition stand during the Gamescom 2014 fair in Cologne August 13, 2014.

A visitor tries a virtual reality headsets during Mobile World Congress in Barcelona, Spain, February 28, 2017.

A man gives instructions to a woman wearing a virtual reality headset at the 25th Euskal Encounter, a four-day party during which over 5,000 computers are linked via local and high speed internet connections, in the Bilbao Exhibition Centre, Barakaldo, Spain, July 23, 2017.

A man tests the 'Zeiss VR One' virtual reality glasses during the Mobile World Congress in Barcelona, Spain February 25, 2016.

Pablo Holcer tests out a virtual reality system made by Neurable that allows the user to control with their thoughts as the EEG headset interprets thoughts into actions in the VR environment at SIGGRAPH 2017 in Los Angeles, California U.S. July 31, 2017. REUTERS/Mike Blake

Guests use Gear VR virtual reality headsets during a preview session in Hollywood, California September 24, 2015. Oculus and Samsung Electronics unveiled a new version of Gear VR virtual reality headset for $99, half the price of the previous "Innovator Edition", and said the product would be available in the United States in time for Black Friday and globally shortly after.

Children wear HTC's Vive Virtual Reality (VR) goggles as they play a VR game at the first Taiwanese VR theme park "Viveland", in Taipei, Taiwan August 1, 2017.

People wear Samsung Gear VR devices as they attend the launching ceremony of the new Samsung S7 and S7 edge smartphones during the Mobile World Congress in Barcelona, Spain, February 21, 2016.

Staff members demonstrate an entertainment programme titled Trap Climbing at VR Zone Shinjuku, Japan's largest class virtual reality entertainment facility operated by Japanese toy and game software maker Bandai Namco, during a press preview in Tokyo, Japan July 12, 2017.

A man tries a Virtual Reality content at VR/AR World during Content Tokyo expo in Tokyo, Japan June 28, 2017.

A visitor tries the flight simulator Birdly at the exhibition "Animated Wonderworlds" at Museum fuer Gestaltung (Museum for Design) in Zurich, November 17, 2015. Birdly simulates the flight of a red kite over New York City, controlled by the entire body of the user. The flight simulator was developed by scientists at Zurich University of the Arts.

People test Samsung Gear VR glasses at their stand during the Mobile World Congress in Barcelona, Spain February 23, 2016.

Facebook CEO Mark Zuckerberg (C) and guests use Gear VR virtual reality headsets during the awards ceremony of the newly established Axel Springer Award in Berlin, Germany, February 25, 2016. Facebook founder and CEO Mark Zuckerberg is the first to receive the award at a ceremony on Thursday.

A man wearing an Oculus VR headset demonstrates a first person shooter game in a Virtuix Omni virtual reality system at the International Consumer Electronics show (CES) in Las Vegas, Nevada January 6, 2015. Wearing special shoes with sensors, the player can actually run in the game.

The stereoscopic view of an airplane cockpit is seen after the lenses are removed from a Vrvana virtual reality headset in Toronto September 12, 2014.

People wear Samsung Gear VR devices as they attend the launching ceremony of the new Samsung S7 and S7 edge smartphones during the Mobile World Congress in Barcelona, Spain, February 21, 2016.

A visiter tries a pair of HTC's Vive Virtual Reality (VR) goggles, during the annual Computex computer exhibition in Taipei, Taiwan June 1, 2016.

People use virtual reality goggles while sitting in a 'smart fortwo cabrio' car prior to the Daimler annual shareholder meeting in Berlin, Germany, April 6, 2016.

A man tries 3Glasses D2 Vanguard by China's Virtual Reality (VR) Technology Limited, during the Spring Computer show in Taipei, Taiwan April 15, 2016.

A woman demonstrates AquaCAVE, a system that augments swimming environment with immersive surrounded-screen virtual reality to enhance the swimming experience, during an demonstration event organized by Sony Corp.'s human augmentation research project with the University of Tokyo, in Tokyo, Japan March 13, 2017.

A dentist wearing a virtual reality (VR) headset, displaying X-ray photographs and other detailed information of a patient three dimensionally, demonstrates VR simulation program for dental surgeons (called WK2 Project), jointly developed by J. Morita Corp. and Realize Mobile Communications Corp., in Tokyo, Japan April 21, 2017.

German Chancellor Angela Merkel stands with U.S. President Barack Obama as he tries the virtual reality device PMD during the opening tour of the Hannover Messe in Hanover, Germany April 25, 2016.