Designing for the eye: design parameters for dwell in gaze interaction

  • Authors:
  • Abdul Moiz Penkar;Christof Lutteroth;Gerald Weber

  • Affiliations:
  • University of Auckland, Auckland, New Zealand;University of Auckland, Auckland, New Zealand;University of Auckland, Auckland, New Zealand

  • Venue:
  • Proceedings of the 24th Australian Computer-Human Interaction Conference
  • Year:
  • 2012

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Abstract

Eye gaze tracking provides a natural and fast method of interacting with computers. Many click alternatives have been proposed so far, each with their own merits and drawbacks. We focus on the most natural selection method, i.e. the dwell, with which a user can select an on-screen object by just gazing at it for a pre-defined dwell time. We have looked at three design parameters of the dwell click alternative, namely dwell time, button size and placement of content. Two experiments, with similar user interfaces, were designed and conducted with 21 and 15 participants, respectively. Different combinations of dwell times and button sizes were tested in each experiment for each participant. One experiment had content placed on the buttons to be gazed at, while the other had content placed above the buttons. One important finding is that moving the content outside the clickable areas avoids accidental clicking, i.e. the Midas Touch problem. In such a design, a combination of big buttons and short dwell times are most suited for maximizing accuracy and ease of use, due to a phenomenon identified as the 'gaze-hold' problem.