The Performance and Preference of Different Fingers and Chords for Pointing, Dragging, and ...
summary
Empirical evaluation compares 10 fingers and 7 two‑finger chords across pointing, dragging, rotation and scaling on a Nexus 10, with 48 participants, five experiments measuring accuracy, throughput (Shannon Fitts) and subjective preference. Key results: single‑finger targets >17.5 mm yield <5% error; chords need 36–40 mm, dominant‑hand fingers rank highest, non‑dominant ring+little and pinches with ring/little rank lowest, dragging and rotation follow similar clusters, and guidelines map specific commands to preferred fingers/chords.
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chapters (16)
- 0:00Introduction to study
- 1:17Finger identification in touch
- 3:47Research gaps and goals
- 5:14Experiment setup overview
- 7:03Fitts-like pointing task
- 8:08Dragging task details
- 8:49Rotation task specifics
- 9:33Scaling task analysis
- 10:37Performance metrics and results
- 11:24Pointing task findings
- 12:09Dragging task findings
- 12:33Rotation task findings
- 12:55Scaling task findings
- 13:20Command mapping guidelines
- 14:21Summary and future work
- 15:04Q&A session
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