Special input devices are required for interaction with the virtual world. These include the 3D mouse, the wired glove, motion controllers, and optical tracking sensors. Controllers typically use optical tracking systems (primarily infrared cameras) for location and navigation, so that the user can move freely without wiring. Some input devices provide the user with force feedback to the hands or other parts of the body, so that the human being can orientate himself in the three-dimensional world through haptics and sensor technology as a further sensory sensation and carry out realistic simulations. Additional haptic feedback can be obtained from omnidirectional treadmills (with which walking in virtual space is controlled by real walking movements) and vibration gloves and suits. https://www.youtube.com/watch?v=9MeqUPkVg2U&t=1s
In 2001, SAS Cube (SAS3) became the first PC-based cubic room, developed by Z-A Production (Maurice Benayoun, David Nahon), Barco, and Clarté. It was installed in Laval, France. The SAS3 library gave birth to Virtools VRPack. In 2007, Google introduced Street View, a service that shows panoramic views of an increasing number of worldwide positions such as roads, indoor buildings and rural areas. It also features a stereoscopic 3D mode, introduced in 2010.
The HTC Vive has been one of the best VR HMDs on the market since its consumer release back in 2016. Manufactured by HTC, the Vive was the first VR HMD to support SteamVR. The Vive has been locked in fierce competition with the Oculus Rift since release, as both headsets aimed at the same top end of the VR enthusiast market. The Vive has proven itself a durable workhorse for enterprise solutions, while also delivering one of the best consumer VR experiences available. The Vive was first released back in 2016, and has gone through several iterations, with the addition of a wireless module. The Vive Pro came out in 2018 and the Vive Pro Eye and the HTC Vive Cosmos are both slated for release in the second half of 2019. https://www.youtube.com/watch?v=LS_-ZMcGnow&t=1s
The Fove setup is an 5.7-inch, 1440p display; a 100+ degree field of view; 70fps frame rate; and eye-tracking measured at 120fps. With the redesigned developer kit, gone are the big side panels and quite a lot of the heft of the last prototype design. The company promises the new model offers "dramatically reduced weight, size and overall wearability, as well as better production efficiency." You might have to wait a bit though – Fove hasn't confirmed plans for the consumer version just yet. https://www.youtube.com/watch?v=sPyAQQklc1s&t=1s
Bottom line, if you're looking for a VR experience that's closer to the Rift and the Vive without the big price tag and the setup, this is the one you want. The room tracking is fantastic, the controllers are the best we've used and while it won't play all of the top end Rift games, there's a good collection of games and experiences to try out already that will hopefully grow over the coming months.
This is more difficult than it sounds, since our senses and brains are evolved to provide us with a finely synchronised and mediated experience. If anything is even a little off we can usually tell. This is where you’ll hear terms such as immersiveness and realism enter the conversation. These issues that divide convincing or enjoyable virtual reality experiences from jarring or unpleasant ones are partly technical and partly conceptual. Virtual reality technology needs to take our physiology into account. For example, the human visual field does not look like a video frame. We have (more or less) 180 degrees of vision and although you are not always consciously aware of your peripheral vision, if it were gone you’d notice. Similarly when what your eyes and the vestibular system in your ears tell you are in conflict it can cause motion sickness. Which is what happens to some people on boats or when they read while in a car.
Basically, these AR headsets have transparent lenses that let you look at your surroundings, instead of completely replacing your vision with a computer-generated image. They can still project images over whatever you're looking at, but those images are designed to complement and interact with the area around you. You can make a web browser pop up in the middle of a room, for instance, or watch animals run around your coffee table. It's fascinating technology that could hint at the future of computing.