AR , VR and MR

Experience and interact with a simulated environment using virtual reality (VR) applications
Enhance the real world using digitally produced perceptual overlays with the augmented reality (AR)
Mixed Reality (MR) known as “hybrid reality”, where physical and digital objects co-exist and interact in real time.
Virtual objects lack the tangible affordances offered by physical objects. User interactions with virtual objects are limited to air-taps or other hand gestures without tangible feedback. Haptics is the solution of this problem. Haptic devices are electro-mechanical tools controlled by computers that allow to recreate the sense of touch. They enhance the sense of interaction with virtual objects from purely visual to haptic and visual. One of its application areas is in training environments, where the users can interact with virtual objects to learn procedures or tasks.