Surfpad: Riding Towards Targets on a Squeeze Film Effect

Abstract : We present Surfpad, a pointing facilitation technique that does not decrease target distance or increase target width in either control or display space. This new technique oper- ates instead in the tactile domain by taking advantage of the ability to alter a touchpad's coefficient of friction by means of a squeeze film effect. We report on three experiments comparing Surfpad to the Semantic Pointing technique and constant control-display gain with and without distractor tar- gets. Our results clearly show the limits of traditional target- aware control-display gain adaptation in the latter case, and the benefits of our tactile approach in both cases. Surfpad leads to a performance improvement close to 9% compared to unassisted pointing at small targets with no distractor. It is also robust to high distractor densities, keeping an aver- age performance improvement of nearly 10% while Seman- tic Pointing can degrade up to 100%. Our results also sug- gest the performance improvement is caused by tactile in- formation feedback rather than mechanical causes, and that the feedback is more effective when friction is increased on targets using a simple step function.
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Submitted on : Sunday, October 30, 2011 - 11:00:18 PM
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Géry Casiez, Nicolas Roussel, Romuald Vanbelleghem, Frédéric Giraud. Surfpad: Riding Towards Targets on a Squeeze Film Effect. CHI'11, the 29th Conference on Human Factors in Computing Systems, May 2011, Vancouver, Canada. 2011, 〈10.1145/1978942.1979307〉. 〈inria-00637135〉



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