Augmented reality is a form of an extended reality that brings components of the digital world into a person’s perception of the real world.
Mixed Reality is a mix of the physical world with digital spaces. The definiton Mixed Reality has originally been introduced in 1994 by Paul Milgram and Fumio Kishino:
An Avatar is an icon or figure representing the body of a person in a virtual world.
Virtual Reality (VR) is a three-dimensional, computer generated environment that you can explore and interact in with one ore more people. To enter the VR world controllers for handtracking and VR glasses are needed.
The idea of holoportation comes from Microsoft. It lets you jump into someone else’s reality as a fullsize 3D hologram. Microsoft Holoportation
3D = three dimensional which is our physical
reality we move in day by day.
The so-called cross-reality = XR is a combination of Virtual Reality, Augmented Reality, Mixed Reality and all kind of Extended Realities.
Holoride is VR in your car. It has been introduced by a Audi venture / startup with the same name Holoride. It is a backseat entertainment that has just been introduced in 2019 at the CES in Las Vegas.