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On the costs of multiple trajectory pointing methods

Philip Quinn, Andy Cockburn, Kari-Jouko Räihä, Jérôme Delamarche
2011 Proceedings of the 2011 annual conference on Human factors in computing systems - CHI '11  
Several enhanced pointing techniques aim to reduce the Fitts' law targeting distance by providing multiple target trajectories in the hope that a shorter path is available. However, these techniques introduce a search or decision component to pointing -users must examine the alternatives available and decide upon the trajectory to use. We analyse these difficulties, present a methodology for examining them as well as other behaviour issues, and report empirical results of performance with
more » ... formance with pointer wrapping and Ninja cursors. Results show that offering multiple trajectories incurs a significant search or decision cost, and that users are therefore poor at capitalising on the theoretical benefits of reduced target distance.
doi:10.1145/1978942.1979067 dblp:conf/chi/QuinnCRD11 fatcat:fmtq24zg3fch3kw4gkmiadeu5y