Unifone: designing for auxiliary finger input in one-handed mobile interactions

Authors:
David Holman;Andreas Hollatz;Amartya Banerjee;Roel Vertegaal
Affiliations:
Queen's University, Kingston, Ontario, Canada;Queen's University, Kingston, Ontario, Canada;Queen's University, Kingston, Ontario, Canada and Northwestern University, Evanston, IL;Queen's University, Kingston, Ontario, Canada
Venue:
Proceedings of the 7th International Conference on Tangible, Embedded and Embodied Interaction
Year:
2013

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Abstract

We present Unifone, a prototype mobile device that explores the use of auxiliary finger input in one-handed mobile interaction. Using force-distributed pressure sensing along the side of device, we examine how squeeze-based gestures impact four common mobile interactions: scrolling, map navigating, text formatting, and application switching. We evaluated the use of Unifone in these tasks using one-handed interactions by the non-dominant hand. Our user study shows that one-handed isometric gestures perform best when they augment rather than restrict or alter the primary pointing action of the thumb and, generally, are suitable for coarse isometric pressure input.