The term mixed reality appeared long after virtual reality and augmented reality. Fine line between the real and the virtual, it combines the two well-known technologies. It uses the same principle as augmented reality: virtual objects overlay on the real world. The major difference lies in the fact that these same 3D objects are fully integrated into the real world in the form of holograms, and that the user can interact with them. Mixed reality is more immersive and interactive than augmented reality, and requires the use of MR glasses.