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Communicating with buttons: current progress in one- and two-button Dasher

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The paper \\\’Effective Communication with one or two buttons\\\’ (MacKay,Ball & Donegan, 2004) describes how Dasher could be driven by discrete button pushes rather than continuous movements in two directions. One of the prototypes discussed has already been implemented: a two-button menu version of Dasher in which each button push corresponds to either a cycling between or a choosing of different zooming options. The preliminary results of the first round of novice training sessions will be presented and human performance compared to the optimum performance rates predicted by information theory. Another prototype suggested by the paper is a time-critical, one-button mode. A preliminary investigation into the operational parameters that would need to be incorporated into such modes is discussed.

The original paper, \\\’Effective Communication with one or two buttons\\\’, can be downloaded from:

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