Glossary
Terms used in accessibility research and practice. Each entry has a definition, common aliases, and category tags.
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- Personal Assistant(also: Virtual Assistant, Digital Assistant, Voice Assistant)
- A software agent that can perform tasks or provide services based on user commands or queries, typically through voice interaction. Popular examples include Amazon Alexa, Google Assistant, Apple Siri, and Microsoft Cortana, often embedded in smart speakers, smartphones, and…
- Predictive Cursor(also: Anticipatory Cursor, Offset Cursor)
- A cursor display technique designed to compensate for the delays inherent in speech-based or other high-latency input methods. A predictive cursor shows an indicator ahead of the actual cursor position, offset by the estimated distance the cursor will travel during the input…
- Proactive Prompt(also: Proactive Cue)
- In voice-interface and conversational-agent design, a system-initiated utterance or visual cue that surfaces a suggestion, reminder, or next step without the user first asking. Examples include suggesting the weather at a user's usual wake-up time, reminding someone to take…
- Push-to-Talk(also: PTT, Push to talk)
- An interaction pattern where a user presses and holds (or taps) a dedicated button to signal the start of an input — historically used in two-way radios, now common in voice assistants and conversational interfaces as an alternative to continuous listening. In accessibility…
- Put That There(also: Put-That-There)
- A pioneering multimodal interactive system built at MIT's Architecture Machine Group (1979-1980), reported by Bolt (1980) and further developed by Schmandt and Hulteen (1982). Users seated in a 'media room' could manipulate a graphical database — such as a Caribbean shipping map…
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