Extending Fitts' law to two-dimensional tasks
CHI '92 Proceedings of the SIGCHI Conference on Human Factors in Computing Systems
Making computers easier for older adults to use: area cursors and sticky icons
Proceedings of the ACM SIGCHI Conference on Human factors in computing systems
Beyond Fitts' law: models for trajectory-based HCI tasks
Proceedings of the ACM SIGCHI Conference on Human factors in computing systems
Proceedings of the SIGCHI conference on Human Factors in Computing Systems
Proceedings of the SIGCHI Conference on Human Factors in Computing Systems
Interacting at a distance: measuring the performance of laser pointers and other devices
Proceedings of the SIGCHI Conference on Human Factors in Computing Systems
Acquisition of expanding targets
Proceedings of the SIGCHI Conference on Human Factors in Computing Systems
Refining Fitts' law models for bivariate pointing
Proceedings of the SIGCHI Conference on Human Factors in Computing Systems
Pointing at trivariate targets in 3D environments
Proceedings of the SIGCHI Conference on Human Factors in Computing Systems
3D User Interfaces: Theory and Practice
3D User Interfaces: Theory and Practice
Object pointing: a complement to bitmap pointing in GUIs
GI '04 Proceedings of the 2004 Graphics Interface Conference
The optical tweezers: multiple-point interaction technique
Proceedings of the ACM symposium on Virtual reality software and technology
The bubble cursor: enhancing target acquisition by dynamic resizing of the cursor's activation area
Proceedings of the SIGCHI Conference on Human Factors in Computing Systems
Distant freehand pointing and clicking on very large, high resolution displays
Proceedings of the 18th annual ACM symposium on User interface software and technology
Interacting with large displays from a distance with vision-tracked multi-finger gestural input
Proceedings of the 18th annual ACM symposium on User interface software and technology
Proceedings of the 18th annual ACM symposium on User interface software and technology
A probabilistic approach to modeling two-dimensional pointing
ACM Transactions on Computer-Human Interaction (TOCHI)
Direct pointer: direct manipulation for large-display interaction using handheld cameras
Proceedings of the SIGCHI Conference on Human Factors in Computing Systems
A representational basis for human-computer interaction
A representational basis for human-computer interaction
HybridPointing: fluid switching between absolute and relative pointing with a direct input device
UIST '06 Proceedings of the 19th annual ACM symposium on User interface software and technology
Using Multivariate Statistics (5th Edition)
Using Multivariate Statistics (5th Edition)
Pointing lenses: facilitating stylus input through visual-and motor-space magnification
Proceedings of the SIGCHI Conference on Human Factors in Computing Systems
The prospects for psychological science in human-computer interaction
Human-Computer Interaction
Fitts' law as a research and design tool in human-computer interaction
Human-Computer Interaction
A multiscale interaction technique for large, high-resolution displays
3DUI '09 Proceedings of the 2009 IEEE Symposium on 3D User Interfaces
Comparing Aimed Movements in the Real World and in Virtual Reality
VR '09 Proceedings of the 2009 IEEE Virtual Reality Conference
Revisiting path steering for 3D manipulation tasks
International Journal of Human-Computer Studies
International Journal of Human-Computer Studies
Two-Part Models Capture the Impact of Gain on Pointing Performance
ACM Transactions on Computer-Human Interaction (TOCHI)
Analysis and comparison of target assistance techniques for relative ray-cast pointing
International Journal of Human-Computer Studies
Pointing at 3d target projections with one-eyed and stereo cursors
Proceedings of the SIGCHI Conference on Human Factors in Computing Systems
High-precision pointing on large wall displays using small handheld devices
Proceedings of the SIGCHI Conference on Human Factors in Computing Systems
Novel metrics for 3D remote pointing
Proceedings of the 1st symposium on Spatial user interaction
Mobile pointing task in the physical world: balancing focus and performance while disambiguating
Proceedings of the 15th international conference on Human-computer interaction with mobile devices and services
Design and evaluation of 3D selection techniques based on progressive refinement
International Journal of Human-Computer Studies
Guidance rays: 3D object selection based on multi-ray in dense scenario
Proceedings of the 12th ACM SIGGRAPH International Conference on Virtual-Reality Continuum and Its Applications in Industry
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Models of human motor behavior are well known as an aid in the design of user interfaces (UIs). Most current models apply primarily to desktop interaction, but with the development of non-desktop UIs, new types of motor behaviors need to be modeled. Distal pointing-pointing directly at a target that is remotely situated with respect to the input device-is such a motor behavior. A model of distal pointing would be particularly useful in the comparison of different interaction techniques, because the performance of such techniques is highly dependent on user strategy, making controlled studies difficult to perform. Inspired by Fitts' law, we studied four possible models and concluded that movement time for a distal pointing task is best described as a function of the angular amplitude of movement and the angular size of the target. Contrary to Fitts' law, our model shows that the angular size has a much larger effect on movement time than the angular amplitude and that the growth in the difficulty of the tasks is quadratic, rather than linear. We estimated the model's parameters experimentally with a correlation coefficient of 96%.