Virtual Reality

 Virtual Reality or 'VR' in short is a technology that has been in development for years. Its goal is to simulate the real life in a virtual environment using certain technological devices. The main goal is to simulate the real world and possible to take its place if we ever need it.

You have the option to use just the vr headset,

 the option to have trackers on your hands along with the headset, 

and finally the option to have full body tracking.

It is currently being used for games and applications such as VRChat and will probably be widely used in education sooner or later.