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Ticker: A text-entry interface with audio feedback for single-switch users

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If you have a question about this talk, please contact Emli-Mari Nel.

This is a work-in-progress talk about Ticker. Ticker is a communication program to assist visually impaired single switch users to type. The alphabet is read to the user, and the user selects letters with a single switch. The single switch can be any system that generates an event when the person says “yes”. A “yes” can, for example, be generated by a gesture like smiling. Noisy click times are modeled by a non-parametric click distribution. We also make use of other information theory techniques to deal with erroneous clicks. To increase the speed of the system we make use of stereo sound effects. Real-time demonstrations will be shown.

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