> For the complete documentation index, see [llms.txt](https://library.xrguild.org/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://library.xrguild.org/glossary.md). # Glossary ### Disclaimer This section is a living educational resource. Definitions may be updated as technologies, research, community standards, and ethical frameworks evolve. Where possible, definitions should be informed by peer-reviewed scholarship, public interest research, established standards, and the XR Guild’s ethical principles. ### How Do I Contribute Terminology? Have a term, definition, article, paper, or ethical category to suggest? Please contribute through the XR Guild Library submission process. The glossary grows through community knowledge, interdisciplinary expertise, and ongoing dialogue. ### Purpose The XR Guild Library Glossary is a living reference for the key terms, concepts, and ethical categories that shape spatial computing, extended reality, artificial intelligence, virtual worlds, neurotechnology, privacy, safety, and responsible design. This glossary is designed to help students, researchers, creators, developers, educators, policy makers, and industry professionals navigate the language of emerging technologies with greater clarity. Many of these terms are still evolving, and their meanings can shift depending on context, discipline, and use case. Our goal is not only to define words, but to help readers understand why these concepts matter ethically. The glossary supports the XR Guild’s broader mission to help professionals in spatial computing make more ethical products through knowledge, advocacy, mentorship, and community. It should be used as a companion to the Library’s research collections, ethical principles, policy resources, and practical guides. ### How to Use This Glossary Use this page as a starting point when exploring the XR Guild Library. Each term includes a working definition, its ethical relevance, and suggested Library categories where the topic may appear. For deeper research, visitors are encouraged to explore the Library’s main categories: AI Ethics\ Current Peer-Reviewed Immersive Technologies\ Ethical Responsibility\ XR Industry News, Events, and Sources\ Neurotechnology, Brain Tech, and Ethical Challenges\ Mind Control and Privacy at Work\ Physiological and Psychological Effects of XR\ Privacy & Policy\ Security & Safety ### Core Technology Terms #### Extended Reality / XR Extended Reality, often shortened to XR, is an umbrella term for immersive and spatial technologies, including virtual reality, augmented reality, mixed reality, and related interactive systems. XR environments can blend digital content, physical environments, embodied interaction, and networked social experiences. Ethical relevance: XR can affect privacy, identity, embodiment, accessibility, safety, cognition, and social behavior. Related categories: Ethical Responsibility, Privacy & Policy, Security & Safety, Physiological and Psychological Effects of XR. #### Virtual Reality / VR Virtual Reality refers to immersive digital environments that users typically experience through headsets, spatial audio, hand controllers, body tracking, or other interactive systems. VR may be used for entertainment, training, education, therapy, collaboration, social interaction, and simulation. Ethical relevance: VR can create powerful feelings of presence, which raises questions about consent, psychological safety, harassment, simulation realism, accessibility, and data collection. Related categories: Physiological and Psychological Effects of XR, Security & Safety, Ethical Responsibility. #### Augmented Reality / AR Augmented Reality overlays digital content onto a user’s view of the physical world. AR can be experienced through phones, tablets, glasses, headsets, and other spatial devices. Ethical relevance: AR can affect public space, attention, surveillance, bystander privacy, advertising, safety, and the relationship between digital information and physical environments. Related categories: Privacy & Policy, Ethical Responsibility, Security & Safety. #### Mixed Reality / MR Mixed Reality refers to experiences where digital and physical elements interact in more integrated ways. MR systems may understand surfaces, objects, spatial context, hand gestures, room layouts, and real-time user behavior. Ethical relevance: MR systems may require detailed environmental mapping and behavioral data, raising questions about privacy, security, consent, and data ownership. Related categories: Privacy & Policy, Security & Safety, Current Peer-Reviewed Immersive Technologies. #### Spatial Computing Spatial Computing describes computing systems that understand and interact with physical or virtual space. It includes technologies such as XR, computer vision, sensors, mapping, gesture recognition, spatial audio, embodied interfaces, and AI-enhanced environments. Ethical relevance: Spatial computing expands computing into the body, home, workplace, classroom, and public life, creating new responsibilities for designers, developers, platforms, and institutions. Related categories: Ethical Responsibility, Privacy & Policy, Security & Safety. #### Virtual Worlds Virtual worlds are persistent or semi-persistent digital environments where people can gather, create, socialize, learn, work, play, and build culture through avatars and shared spaces. They may be accessed through VR, desktop, mobile, or web-based platforms. Ethical relevance: Virtual worlds raise questions about governance, moderation, identity, community safety, digital property, accessibility, cultural preservation, and user rights. Related categories: Ethical Responsibility, Security & Safety, Privacy & Policy. ### Ethics and Governance Terms #### Ethical Responsibility Ethical responsibility refers to the obligation of creators, developers, researchers, platforms, organizations, and communities to consider the social, psychological, cultural, and human consequences of immersive technologies. Ethical relevance: XR systems should be designed with care for user dignity, safety, consent, privacy, equity, accessibility, and long-term societal impact. Related categories: Ethical Responsibility. #### Responsible Innovation Responsible innovation is the practice of developing new technologies while actively considering risks, benefits, affected communities, unintended consequences, and public accountability. Ethical relevance: Responsible innovation helps prevent harm before products reach scale. Related categories: Ethical Responsibility, AI Ethics, Privacy & Policy. #### Governance Governance refers to the rules, processes, policies, standards, and institutional structures that guide how technologies are developed, deployed, moderated, and regulated. Ethical relevance: Governance determines who has power, who is protected, how disputes are resolved, and how accountability is enforced. Related categories: Ethical Responsibility, Privacy & Policy, Security & Safety. #### Consent Consent means that users understand and voluntarily agree to how they participate in an experience, how their data is collected, and how their likeness, behavior, voice, biometric signals, or creative work may be used. Ethical relevance: Immersive systems often collect sensitive behavioral and biometric data, making clear and meaningful consent especially important. Related categories: Privacy & Policy, Ethical Responsibility, Security & Safety. #### Transparency Transparency means that systems, platforms, and organizations clearly communicate how technologies work, what data is collected, how decisions are made, and what risks users may face. Ethical relevance: Transparency supports trust, accountability, informed consent, and responsible participation. Related categories: AI Ethics, Ethical Responsibility, Privacy & Policy. #### Accountability Accountability means that individuals, organizations, platforms, and systems can be held responsible for decisions, harms, errors, abuses, or failures. Ethical relevance: Accountability is essential when immersive technologies affect safety, privacy, identity, access, labor, education, health, and public life. Related categories: Ethical Responsibility, AI Ethics, Security & Safety. #### Inclusion Inclusion means designing systems, communities, and experiences that respect and support people across differences in ability, culture, age, language, gender, economic access, geography, and lived experience. Ethical relevance: Inclusive design helps prevent immersive technologies from reinforcing exclusion, bias, discrimination, or unequal access. Related categories: Ethical Responsibility, AI Ethics, Privacy & Policy. #### Accessibility Accessibility refers to the design of technologies, experiences, content, and interfaces so that people with disabilities and different needs can participate meaningfully. Ethical relevance: XR accessibility includes visual, auditory, mobility, cognitive, sensory, and economic considerations. Related categories: Ethical Responsibility, Physiological and Psychological Effects of XR. ### AI Ethics Terms #### Artificial Intelligence / AI Artificial Intelligence refers to computational systems that perform tasks commonly associated with human intelligence, such as perception, language processing, prediction, classification, generation, planning, and decision support. Ethical relevance: AI systems can influence access, identity, labor, creativity, social interaction, moderation, personalization, surveillance, and decision-making. Related categories: AI Ethics, Ethical Responsibility, Privacy & Policy. #### Algorithmic Bias Algorithmic bias occurs when an AI or computational system produces unfair, discriminatory, or systematically distorted outcomes because of flawed data, design, assumptions, training methods, or deployment contexts. Ethical relevance: Bias can affect representation, access, safety, hiring, policing, education, healthcare, content moderation, avatars, and user experience. Related categories: AI Ethics, Ethical Responsibility. #### AI Governance AI governance refers to the policies, standards, practices, and oversight structures that guide the responsible development and deployment of AI systems. Ethical relevance: AI governance helps address risks related to bias, transparency, accountability, safety, privacy, labor, and human rights. Related categories: AI Ethics, Privacy & Policy, Ethical Responsibility. #### Generative AI Generative AI refers to systems that can produce new content, including text, images, audio, video, code, 3D assets, characters, environments, and interactive media. Ethical relevance: Generative AI raises questions about authorship, consent, copyright, synthetic media, labor displacement, misinformation, bias, cultural appropriation, and creative integrity. Related categories: AI Ethics, Ethical Responsibility, Privacy & Policy. #### Synthetic Media Synthetic media refers to images, videos, audio, avatars, voices, environments, or other content generated or manipulated by AI or computational tools. Ethical relevance: Synthetic media can enable creativity and accessibility, but can also be used for impersonation, misinformation, non-consensual imagery, fraud, harassment, and identity abuse. Related categories: AI Ethics, Security & Safety, Privacy & Policy. #### AI Transparency AI transparency means making AI systems understandable to users, developers, regulators, and affected communities. This may include explaining data sources, model behavior, limitations, risks, and decision processes. Ethical relevance: Transparency helps users understand when they are interacting with AI and how AI may affect them. Related categories: AI Ethics, Ethical Responsibility. ### Privacy, Identity, and Data Terms #### Privacy Privacy is the ability of individuals and communities to control access to information about themselves, including personal data, behavioral data, biometric data, location data, social relationships, and contextual information. Ethical relevance: XR can collect unusually intimate forms of data, including movement, gaze, gestures, voice, environment scans, and social interactions. Related categories: Privacy & Policy, Security & Safety, Ethical Responsibility. #### Behavioral Data Behavioral data refers to information about how people act, move, choose, speak, react, interact, and navigate within digital or physical environments. Ethical relevance: In XR, behavioral data can reveal preferences, emotions, attention, habits, identity, disability, stress, relationships, and vulnerabilities. Related categories: Privacy & Policy, Security & Safety, Mind Control and Privacy at Work. #### Biometric Data Biometric data refers to data related to physical or behavioral characteristics that can identify or profile a person, such as face, voice, iris, gait, hand movement, body motion, heart rate, and other biological or behavioral signals. Ethical relevance: XR devices may collect biometric signals continuously, creating privacy and security risks if data is misused, leaked, inferred from, or shared without consent. Related categories: Privacy & Policy, Security & Safety, Neurotechnology. #### Digital Identity Digital identity refers to the ways individuals are represented, recognized, authenticated, or socially understood in digital environments. This can include usernames, avatars, profiles, credentials, reputations, virtual bodies, and platform histories. Ethical relevance: Digital identity affects autonomy, safety, reputation, self-expression, ownership, impersonation, and community trust. Related categories: Ethical Responsibility, Privacy & Policy, Security & Safety. #### Avatar Identity Avatar identity refers to the relationship between a user and their virtual body, character, or representation in immersive spaces. Ethical relevance: Avatars can support expression, embodiment, and belonging, but can also raise issues involving impersonation, harassment, stereotyping, realism, identity misuse, and emotional attachment. Related categories: Ethical Responsibility, Mind Control and Privacy at Work, Privacy & Policy. #### Data Minimization Data minimization is the principle that systems should only collect the data necessary for a clear and legitimate purpose. Ethical relevance: Because XR can collect highly sensitive information, minimizing data collection helps reduce privacy, security, and surveillance risks. Related categories: Privacy & Policy, Security & Safety. #### Surveillance Surveillance refers to the monitoring, recording, tracking, or analysis of people, behavior, environments, or social interactions. Ethical relevance: XR surveillance may involve users, bystanders, workplaces, classrooms, public spaces, or private homes. Related categories: Privacy & Policy, Mind Control and Privacy at Work, Security & Safety. ### Safety and Security Terms #### Safety by Design Safety by design means building protections into products, systems, communities, and experiences from the beginning rather than adding them after harms occur. Ethical relevance: XR safety may include moderation tools, reporting systems, personal boundaries, age protections, comfort settings, accessibility support, and abuse prevention. Related categories: Security & Safety, Ethical Responsibility. #### Security Security refers to the protection of systems, devices, data, identities, networks, and users from unauthorized access, abuse, manipulation, theft, or harm. Ethical relevance: XR security is especially important because immersive systems may involve identity, biometrics, payments, social interaction, workplace data, and environmental mapping. Related categories: Security & Safety, Privacy & Policy. #### Harassment in XR Harassment in XR refers to unwanted, hostile, threatening, discriminatory, sexual, or abusive behavior in immersive environments. Ethical relevance: Because XR can create embodied presence, harassment can feel more physically and psychologically intense than harassment in traditional media. Related categories: Security & Safety, Ethical Responsibility, Physiological and Psychological Effects of XR. #### Moderation Moderation refers to the practices, tools, policies, and human or automated systems used to manage behavior, content, conflict, safety, and community standards. Ethical relevance: Moderation affects speech, safety, fairness, inclusion, governance, appeal rights, and community trust. Related categories: Security & Safety, Ethical Responsibility, AI Ethics. #### Age-Appropriate Design Age-appropriate design means creating digital services that protect and support children and young people according to their developmental needs, rights, safety, and privacy. Ethical relevance: XR experiences for children require special care around data collection, advertising, social interaction, safety, embodiment, and psychological effects. Related categories: Security & Safety, Privacy & Policy, Ethical Responsibility. #### Risk Assessment Risk assessment is the process of identifying possible harms, evaluating their likelihood and severity, and designing safeguards to reduce them. Ethical relevance: XR risk assessments should consider physical safety, privacy, psychological effects, identity, harassment, accessibility, manipulation, and vulnerable users. Related categories: Security & Safety, Ethical Responsibility, Privacy & Policy. ### Neurotechnology and Cognitive Rights Terms #### Neurotechnology Neurotechnology refers to technologies that monitor, measure, stimulate, interpret, or interact with the nervous system or brain-related signals. Ethical relevance: Neurotechnology can create benefits in accessibility, health, communication, and research, but also raises deep concerns about mental privacy, agency, consent, and misuse. Related categories: Neurotechnology, Brain Tech, and Ethical Challenges. #### Brain-Computer Interface / BCI A Brain-Computer Interface is a system that enables communication between the brain or nervous system and a computer or device. Ethical relevance: BCIs may affect privacy, autonomy, identity, health, accessibility, labor, and human agency. Related categories: Neurotechnology, Brain Tech, and Ethical Challenges, Mind Control and Privacy at Work. #### Neural Data Neural data refers to information collected from the brain or nervous system, including signals that may reveal cognitive, emotional, sensory, or behavioral states. Ethical relevance: Neural data can be highly sensitive because it may relate to mental states, health, emotion, attention, intention, or identity. Related categories: Neurotechnology, Brain Tech, and Ethical Challenges, Privacy & Policy. #### Cognitive Liberty Cognitive liberty refers to the right to mental self-determination, including freedom of thought, mental privacy, and protection from unwanted manipulation or coercive influence. Ethical relevance: XR, AI, neurotechnology, and persuasive systems may affect attention, belief, behavior, autonomy, and decision-making. Related categories: Mind Control and Privacy at Work, Neurotechnology, Ethical Responsibility. #### Mental Privacy Mental privacy refers to protection from unauthorized access, inference, manipulation, or exposure of a person’s thoughts, emotions, intentions, or cognitive states. Ethical relevance: As immersive and neural technologies become more sophisticated, mental privacy becomes central to human dignity and autonomy. Related categories: Mind Control and Privacy at Work, Neurotechnology, Privacy & Policy. #### Persuasive Design Persuasive design refers to design strategies that influence user behavior, choices, attention, habits, or beliefs. Ethical relevance: Persuasive design can support beneficial outcomes, but it can also become manipulative when users are not aware of how they are being influenced. Related categories: Mind Control and Privacy at Work, AI Ethics, Ethical Responsibility. #### Behavioral Nudging Behavioral nudging refers to subtle design choices that steer users toward certain actions or decisions. Ethical relevance: In immersive environments, nudging can be powerful because it may combine embodiment, spatial cues, AI personalization, social pressure, and sensory design. Related categories: Mind Control and Privacy at Work, AI Ethics, Ethical Responsibility. ### Physiological and Psychological Terms #### Presence Presence is the feeling of “being there” inside a virtual, augmented, or mixed reality experience. Ethical relevance: Presence can deepen learning and empathy, but it can also intensify fear, harassment, manipulation, trauma, discomfort, and emotional impact. Related categories: Physiological and Psychological Effects of XR, Ethical Responsibility. #### Embodiment Embodiment refers to the feeling that a virtual body, avatar, or digital representation is connected to one’s sense of self or physical experience. Ethical relevance: Embodiment can affect identity, empathy, confidence, bias, body image, emotional response, and social interaction. Related categories: Physiological and Psychological Effects of XR, Ethical Responsibility. #### Simulator Sickness Simulator sickness refers to nausea, dizziness, disorientation, eye strain, headaches, or discomfort that may occur during or after immersive experiences. Ethical relevance: XR creators should design experiences that reduce discomfort, support user control, and provide clear safety guidance. Related categories: Physiological and Psychological Effects of XR, Security & Safety. #### Cybersickness Cybersickness is a form of motion-related discomfort that can occur in virtual environments, often caused by mismatch between visual motion and the body’s physical sense of movement. Ethical relevance: Reducing cybersickness is part of responsible, accessible, and safe XR design. Related categories: Physiological and Psychological Effects of XR, Security & Safety. #### Emotional Harm Emotional harm refers to distress, anxiety, fear, humiliation, trauma, or other negative psychological impacts caused or intensified by an experience. Ethical relevance: XR can make emotional experiences feel more immediate and embodied, requiring careful attention to content warnings, consent, moderation, and user controls. Related categories: Physiological and Psychological Effects of XR, Security & Safety, Ethical Responsibility. ### Policy and Research Terms #### Peer-Reviewed Research Peer-reviewed research is scholarship that has been evaluated by experts before publication. Ethical relevance: Peer-reviewed work can help ground XR ethics in evidence, rather than speculation, marketing claims, or hype. Related categories: Current Peer-Reviewed Immersive Technologies. #### Policy Policy refers to formal rules, guidelines, regulations, standards, or organizational practices that shape how technologies are developed, used, governed, and evaluated. Ethical relevance: Policy can protect users, define responsibilities, guide institutions, and create accountability across the XR ecosystem. Related categories: Privacy & Policy, Ethical Responsibility, Security & Safety. #### Standards Standards are agreed-upon technical, ethical, safety, accessibility, or governance practices that help systems work responsibly and consistently. Ethical relevance: Standards can improve interoperability, safety, accessibility, privacy, and public trust. Related categories: Ethical Responsibility, Security & Safety, Privacy & Policy. #### Human Subjects Protection Human subjects protection refers to ethical safeguards for people participating in research, testing, or studies. Ethical relevance: XR research can involve sensitive data, emotional response, embodiment, social interaction, biometric signals, and psychological effects, requiring careful protections. Related categories: Current Peer-Reviewed Immersive Technologies, Security & Safety, Privacy & Policy. --- # Agent Instructions This documentation is published with GitBook. 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