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Abracadabra: wireless, high-precision, and unpowered finger input for very small mobile devices

Published:04 October 2009Publication History

ABSTRACT

We present Abracadabra, a magnetically driven input technique that offers users wireless, unpowered, high fidelity finger input for mobile devices with very small screens. By extending the input area to many times the size of the device's screen, our approach is able to offer a high C-D gain, enabling fine motor control. Additionally, screen occlusion can be reduced by moving interaction off of the display and into unused space around the device. We discuss several example applications as a proof of concept. Finally, results from our user study indicate radial targets as small as 16 degrees can achieve greater than 92% selection accuracy, outperforming comparable radial, touch-based finger input.

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References

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      • Published in

        cover image ACM Conferences
        UIST '09: Proceedings of the 22nd annual ACM symposium on User interface software and technology
        October 2009
        278 pages
        ISBN:9781605587455
        DOI:10.1145/1622176

        Copyright © 2009 ACM

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        New York, NY, United States

        Publication History

        • Published: 4 October 2009

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