Designing and Evaluating Gestural Interfaces

Designing and Evaluating Gestural Interfaces

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Touch continues to be a big topic in user experience and product development. I recently came across two articles that add great points to the continuing dialog:

Design Considerations for Touch UI

This article enumerates five major pointers for designing effective touch interfaces, namely:

  1. Design for immediate access
  2. Keep gestures smart and simple
  3. Leverage clear mental models
  4. Design for real hand sizes
  5. Touch feedback is key

See the full article or summary video.

Evaluating Gesture Usability

Kevin Arthur, whose site is dedicated to touch interface usability, shares a rough draft for evaluating gestures. He advocates for the need to have “reliable and repeatable evaluation techniques for gestures,” applicable to all forms of touch: touchpad, touchscreens, and free-form. The draft outlines some distinctions of gestures:

  • Gestures are inter-related.
  • Gesture interfaces typically don’t have affordances.
  • Gestures don’t just need to work — they need to not work when they’re not supposed to.
  • For touch gestures things like finger size and fingernails can make a very big difference so it’s important that the test participants are representative.

I agree that there are greater considerations in testing gestures, particularly around learnability, feedback, consistency, and accuracy.

Follow the developing article.

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