Modeling the functional area of the thumb on mobile touchscreen surfaces
CHI, pp. 1991-2000, 2014.
We present a predictive model for the functional area of the thumb on a touchscreen surface: the area of the interface reachable by the thumb of the hand that is holding the device. We derive a quadratic formula by analyzing the kinematics of the gripping hand. Model fit is high for the thumb-motion trajectories of 20 participants. The mo...More
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