Breaking the laws of action in the user interface

12 years 4 days ago
Breaking the laws of action in the user interface
Fitts' law, Steering law and Law of crossing, collectively known as the laws of action, model the speed-accuracy tradeoffs in common HCI tasks. These laws impose a certain speed ceiling on precise actions in a user interface. My hypothesis is that for some interfaces, the constraints of these laws can be relaxed by using context information of the task. To support this thesis, I present two systems I have developed for penbased text input on stylus keyboards. These systems break either Fitts' law or the Law of crossing by taking advantage of high-resolution information from the pen, and the fact that words can be seen as patterns traced on the keyboard. Using these systems users can potentially gain higher text entry speed than on a regular stylus keyboard that is limited by the laws of action. I conclude by discussing planned future research, primarily improved visual feedback and empirical evaluation. Categories & Subject Descriptors: H.5.2 [Information Interfaces and ...
Per Ola Kristensson
Added 30 Nov 2009
Updated 30 Nov 2009
Type Conference
Year 2005
Where CHI
Authors Per Ola Kristensson
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