VirHKey: a VIRtual Hyperbolic KEYboard with gesture interaction and visual feedback for mobile devices

  • Authors:
  • Benoît Martin

  • Affiliations:
  • University of Metz, Metz, France

  • Venue:
  • Proceedings of the 7th international conference on Human computer interaction with mobile devices & services
  • Year:
  • 2005

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Abstract

The VirHKey is a new text entry method for mobile devices using a simple Unistroke-like alphabet. Gesture recognition is accomplished not through pattern recognition but through sequences of flicks with low required angular accuracy: 2p/5 in radians. This means that the full stroke path is unimportant and recognition is highly deterministic, enabling good accuracy. All during the interaction, an optional visual feedback is provided at least for the learning stage. This is done with a focus and context display based on the hyperbolic geometry. To illustrate the possibilities of the VirHKey, a prototype application was developed and usability tests demonstrated the overall good performances of the proposition with a text entry rate from 18 to 25 words per minute and a high satisfaction of users.