of personal actions, movements and responses. Data from eye tracking sensors, which are projected to become a standard feature in virtual reality headsets, may indirectly reveal information about a user's ethnicity, personality traits, fears, emotions, interests, skills, and physical and mental health conditions. Virtual reality in fiction See also 16K resolution 360-degree video AlloSphere Computer-mediated reality Diorama Extended reality Haptic suit Holographic principle Hyperreality Mixed reality Virtual body Virtual globe Virtual machining Metaverse Gustatory technology List of virtual reality headsets References Further reading External links Basic Concepts of Virtual Reality along with Research Challenges explained in simple words. Mixed Reality Scale – Milgram and Kishino's (1994) Virtuality Continuum paraphrase with examples. Interviews on the history and future of virtual reality by leaders in the field. 3D GUIs