Glossary
Searchable terminology from accessibility, web standards, and related fields.
6660 terms — page 289 of 333
- Tactile Signage (Tactile Signs, Touch-Readable Signs)
- Signs designed to be read by touch, typically featuring raised lettering, Braille text, or tactile symbols. Required in many jurisdictions under accessibility legislation such as the Americans with Di…
- Tactile Stimulation (Tactile Feedback, Cutaneous Stimulation)
- Tactile stimulation refers to the use of physical sensations delivered to the skin to convey information, typically through vibrations, pin arrays, textures, or pressure changes. In assistive technolo…
- Tactile Texture (Haptic Texture)
- The surface quality of a material or graphic element as perceived through touch, characterized by properties such as roughness, smoothness, density, height, pattern regularity, and directionality. In …
- Tactile User Interface (Tactile UI, TUI)
- A user interface designed to be operated and understood through the sense of touch, enabling interaction for blind and low vision users. Tactile user interfaces may include physical buttons with tacti…
- Tactile Working Memory (Haptic Working Memory, Touch Working Memory)
- The cognitive system responsible for temporarily storing and manipulating tactile information received through the sense of touch. Similar to visual and auditory working memory, tactile working memory…
- Tactile graphic production (Tactile image creation, Accessible graphic transcription)
- The process of converting visual images — such as textbook diagrams, charts, maps, and illustrations — into raised tactile representations that can be explored by touch. Production methods include swe…
- Tactile graphics (Raised-line graphics, Touch graphics)
- Physical representations of visual information using raised surfaces, textures, and patterns that can be explored through touch. Tactile graphics are essential for conveying spatial and graphical info…
- Tactile learning (Haptic learning, Touch-based learning)
- An educational approach that uses the sense of touch as a primary channel for acquiring knowledge, developing skills, and understanding concepts. For BLV students, tactile learning is essential — brai…
- Tactile paving (Tactile ground surface indicators, TGSI, Detectable warning surface, Truncated domes)
- A system of textured ground surfaces installed on footpaths, transit platforms, and pedestrian crossings to provide navigational cues to people with visual impairments through the sense of touch under…
- Tactile relief (2.5D relief, Tactile relief model)
- A physical representation that preserves depth information and surface textures from a two-dimensional image, creating a raised surface that can be explored by touch. Unlike flat raised-line drawings …
- Tactile-First Strategy (Touch-Based Strategy, Tactile-First Approach)
- An approach to completing tasks that prioritizes touch and physical sensation as the primary sensory channel for guidance, feedback, and assessment. In accessibility contexts, tactile-first strategies…
- Tactilization (Tactile Rendering, Haptic Rendering)
- The process of converting visual or abstract information into tactile representations that can be perceived through the sense of touch. In accessibility, tactilization transforms content such as web p…
- Tacton (Tactile Icon, Vibrotactile Pattern)
- A structured and abstract vibrotactile message designed to communicate complex information to users non-visually, analogous to how icons communicate information visually or earcons communicate through…
- Tactor (Vibrotactile Actuator, Tactile Actuator, Vibration Motor)
- A small electromechanical device that produces vibrations against the skin to convey information through the sense of touch. Tactors are the fundamental components of tactile displays and wearable hap…
- Tadoma (Tadoma Method)
- A tactile method of communication used by individuals who are deafblind, in which the receiver places their hand on the speaker's face — thumb lightly on the lips and fingers along the jawline and che…
- Tag Order (Source Order, DOM Order, Reading Order)
- The sequential order in which HTML elements appear in the source code of a web page, which determines the order in which screen readers and other assistive technologies present content to users. When …
- Tag Tree (PDF Tag Structure, Structure Tree, Tagged PDF Structure)
- The hierarchical structure of semantic tags embedded within a PDF document that defines the logical organization and reading order of its content. A tag tree is analogous to the DOM (Document Object M…
- Tagged PDF (Structured PDF, Accessible PDF)
- A PDF document that contains semantic structure tags defining the logical reading order, headings, paragraphs, lists, tables, and figures — enabling screen readers and other assistive technologies to …
- Tailorability (Tailorable systems)
- A design property, central to infrastructuring theory, that allows users to configure, extend, or repurpose a system after deployment to fit their local use context. Tailorability goes beyond 'customi…
- TalkBack (Android TalkBack, Google TalkBack)
- The built-in screen reader for Android devices, developed by Google as part of the Android Accessibility Suite. TalkBack provides spoken feedback, vibration, and other audible cues to help blind and v…