Richard Bates
ABSTRACT
This paper quantifies the benefits and usability problems associated with eye-based pointing direct interaction on a standard graphical user interface. It shows where and how, with the addition of a second supporting modality, the typically poor performance and subjective assessment of eye-based pointing devices can be improved to match the performance of other assistive technology devices. It shows that target size is the overriding factor affecting device performance and that when target sizes are artificially increased by 'zooming in' on the interface under the control of a supporting modality then eye-based pointing becomes a viable and usable interaction methodology for people with high-level motor disabilities.
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Index Terms
- Zooming interfaces!: enhancing the performance of eye controlled pointing devices
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