Pre-Touch Sensing for Mobile Interaction
summary
A prototype self-capacitance touchscreen (Fogale-style) senses fingers hovering and grip around edges, not just taps. An ad-lib interface fades controls in ~200 ms tailored to grip: one-thumb dials, two-thumb or pinch offer different UIs, and elements fade out slowly. Approach direction and speed — the approach trajectory — disambiguates ballistic versus precise touches and can map taps to nearby small controls. Demos include hybrid press-plus-hover menus; evaluation is informal and shows need for per-user tuning and better calibration to avoid false hover events.
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chapters (11)
- 0:00Introduction to pre-touch sensing
- 2:32Key observation on pre-touch
- 4:21Sensor technology overview
- 6:30Design space exploration
- 7:31Anticipatory reactions demo
- 11:47Calm revelation for web browsing
- 12:30Retroactive touch disambiguation
- 14:15Hybrid touch and hover gestures
- 15:19User feedback and evaluation
- 16:41Conclusion and future potential
- 17:47Q&A session