Glossary
Terms used in accessibility research and practice. Each entry has a definition, common aliases, and category tags.
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- Zero-Touch Interaction(also: Touchless Interaction, Hands-Free Interaction)
- An interaction paradigm that allows users to control devices or systems without physically touching them, typically through voice commands, gestures detected by cameras or sensors, or ambient sensing. Zero-touch interaction is particularly important for accessibility in contexts…
- Zipf's Law
- A statistical observation that in any natural language corpus, the frequency of a word is inversely proportional to its rank in the frequency table. The most common word occurs roughly twice as often as the second most common, three times as often as the third, and so on. In…
- Zoom Interface(also: Zoom Screen, Zoomable User Interface, ZUI)
- A user interface technique that allows users to magnify a portion of the screen to increase the effective size of interface elements, making them easier to select with low-precision pointing devices such as eye trackers or head mice. Unlike simple screen magnification for low…
- ZoomText
- A commercial screen magnification and screen reading software for Windows, developed by Freedom Scientific (formerly Ai Squared). ZoomText provides up to 60x magnification along with features like smooth font display, cursor enhancements, focus tracking, and a built-in screen…
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