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Depicting the Keypad Mouse Interface: Exploring Pointing Behaviors of Three Input Devices

J. Eduardo PĂ©rez, Xabier Valencia, Myriam Arrue and Julio Abascal

The 17th International ACM SIGACCESS Conference on Computers and Accessibility - Posters and Demos (ASSETS 2015)
Lisbon, Portugal, October 26-28, 2015


Using standard keyboard for pointing and clicking interactions seems to be an affordable option for people who have difficulties handling a standard mouse due to a lack of dexterity or temporal disability conditions. The keypad mouse uses discrete input based on keystrokes to perform cursor movements. This distinctive feature along with others related to cursor motion behavior, make the keypad mouse a unique pointing interface when compared with alternatives. We have carried out a study with expert users of different pointing devices. Results of the study revealed significant differences in the performance values among participants in the three groups. Direction on aimed cursor movements proved to be a crucial factor to be taken into account for keyboard-only users. The findings presented in this paper have a broad application when it comes to designing effective predictive models as well as to proposing design guidelines, novel interaction techniques and adaptation techniques for this collective

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