Glossary

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Veering(also: Lateral Drift)

The tendency of blind and visually impaired pedestrians to gradually drift away from a straight path while walking, resulting in a curved trajectory rather than a direct line. Veering is a well-documented phenomenon in orientation and mobility research, caused by the absence of…

Vibro-Audio Map(also: VAM, Vibro-Audio Display)

A multimodal map representation for touchscreen devices that combines vibrotactile feedback with synchronised audio cues to convey spatial information non-visually. Users explore the map by dragging a finger across the screen; when they cross a feature (a street, a room…

Video Chapters(also: Chapter Markers, Video Segments, Timestamps)

Navigational markers within a video that divide content into labeled sections, allowing viewers to jump directly to specific topics or segments. Video chapters function like a table of contents for video content. For viewers with ADHD, chapters are particularly valuable because…

Virtual Cursor(also: Browse Mode Cursor, Virtual PC Cursor)

A navigation mechanism used by screen readers that creates a linearized, text-based representation of a web page through which users can move sequentially. Unlike a visual cursor that points to a location on screen, the virtual cursor moves through the page's content structure —…

Virtual Exploration(also: Virtual Navigation, Virtual Travel)

The use of technology to simulate the experience of navigating or exploring a real-world environment without physically being there. For people with visual impairments, virtual exploration typically relies on audio-based representations of geographic data — including spatial…

Voice Vista

A free audio-based navigation application for blind and low-vision users that uses 3D spatial audio to announce nearby streets, intersections, points of interest, and set beacons as the user walks. Voice Vista is a community-maintained successor to Microsoft Soundscape, released…

Voicemark(also: Voice Bookmark, Audio Bookmark)

A navigable audio marker or bookmark that allows users to quickly locate and access specific sections of web content or documents through speech or keyboard interaction. Voicemarks are created by analyzing and labeling content segments, then storing these labeled references in a…

Volunteered Geographic Information(also: VGI, Citizen-Generated Geospatial Data)

Geographic information voluntarily created and shared by citizens, often using GPS-enabled smartphones, mapping tools, and online platforms. VGI enables large-scale collection of spatial data at low cost through citizen participation. In accessibility contexts, VGI includes…

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