Glossary

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Tactile Captions(also: Haptic Captions, Vibrotactile Captions)

An enhanced captioning approach that supplements traditional text-based captions with vibrotactile feedback, allowing deaf and hard of hearing viewers to feel non-speech sounds (such as phone rings, doorbells, footsteps, or objects falling) through a wrist-worn or body-worn…

Tactile Display(also: Haptic Display)

A device that presents information through the sense of touch, using raised elements, vibrations, or other tactile stimuli to convey data that would typically be presented visually. Tactile displays serve as assistive technology for blind and low vision users, enabling access to…

Tactile Dowsing

An interaction technique that uses vibrotactile feedback to guide a user toward a target direction in space without visual cues. The term draws an analogy to water dowsing, where a divining rod supposedly reacts when pointing toward the target. In tactile dowsing, a handheld…

Tactile Exploration Strategy(also: Haptic Exploration Strategy, Touch Exploration Pattern)

A systematic approach or pattern that a person uses when exploring tactile graphics, maps, or other touch-based representations. Research has identified several distinct strategies: "following outlines" (tracing the borders of shapes), "saccade" (jumping between specific zones),…

Tactile Stimulation(also: 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 technology, tactile stimulation is fundamental to braille displays, haptic interfaces,…

Thermotactile Feedback(also: Thermal Feedback, Thermal Haptic Feedback, Thermotactile Display)

Thermotactile feedback is a form of haptic communication that conveys information through controlled temperature changes on the skin, using heating or cooling elements such as Peltier thermoelectric modules. In accessibility, thermotactile feedback offers an alternative to…

Trajectory Playback(also: Haptic Playback, Force-Guided Movement)

A technique in haptic interfaces where a force-feedback device physically guides a user's hand through a predefined path or shape. The system applies forces to move the user along a trajectory, allowing them to perceive spatial information through proprioception and kinesthetic…

Two-Point Discrimination(also: Spatial Acuity, Tactile Acuity)

A measure of tactile sensitivity indicating the minimum distance at which two distinct points of contact on the skin can be perceived as separate rather than as a single point. Lower values indicate higher sensitivity. The fingertips have the highest two-point discrimination…

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