GesText: accelerometer-based gestural text-entry systems

  • Authors:
  • Eleanor Jones;Jason Alexander;Andreas Andreou;Pourang Irani;Sriram Subramanian

  • Affiliations:
  • University of Bristol, Bristol, United Kingdom;University of Bristol, Bristol, United Kingdom;University of Bristol, Bristol, United Kingdom;University of Manitoba, Winnipeg, MAN, Canada;University of Bristol, Bristol, United Kingdom

  • Venue:
  • Proceedings of the SIGCHI Conference on Human Factors in Computing Systems
  • Year:
  • 2010

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Abstract

Accelerometers are common on many devices, including those required for text-entry. We investigate how to enter text with devices that are solely enabled with accelerometers. The challenge of text-entry with such devices can be overcome by the careful investigation of the human limitations in gestural movements with accelerometers. Preliminary studies provide insight into two potential text-entry designs that purely use accelerometers for gesture recognition. In two experiments, we evaluate the effectiveness of each of the text-entry designs. The first experiment involves novice users over a 45 minute period while the second investigates the possible performance increases over a four day period. Our results reveal that a matrix-based text-entry system with a small set of simple gestures is the most efficient (5.4wpm) and subjectively preferred by participants.