Evaluation of mapping functions for one-handed flick operations on a mobile device
Jeehea Lee, Donghun Lee, Min K. Chung · 2011
With the increasing use of mobile devices with full-touch screens, screen-movement methods, especially those for scrolling, have become critical. Flick is one of the most preferred screen movement methods for scrolling. To improve the usability of flick, this study evaluated various mapping functions for one-handed flick. Mapping functions are models that show the relationship between the velocity of input and the movement of the screen. They were established by combining four types of functions, linear, quadratic, log, and logistic, and three initial screen movement velocities at the maximum control velocity of the flick, 222, 444, and 666 mm/s. After being used to find targets on a contact list, the mapping functions were evaluated by measuring task completion time and ease of use. We recommend the linear function with 444 mm/s and the quadratic function with 444 mm/s or 666 mm/s as the mapping function for flicking.