DigitSpace: Designing Thumb-to-Fingers Touch Interfaces for One-Handed and Eyes-Free Interactions
summary
Three studies map 12 finger segments for comfort (Wilcoxon shows dominant hand and thumb anatomy matter), test discrete layouts (index 5, middle 5, ring 4, pinky 2) and continuous strokes with a high-speed camera and One-Way ANOVA; users reliably differentiate 16 buttons; general stroke models hit ~80% but personalized recognizers reach 92% on cross-finger touchpads. A working prototype—a nail-ring chain with 3x3 Hall-effect grids and 1x8 sensor strip—controls lights and music successfully.
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chapters (6)
- 0:00Introduction to interface
- 2:16Study 1: Comfort regions
- 4:40Study 2: Button layout
- 8:53Study 3: Stroke gestures
- 12:53Design principles
- 15:07Prototype and applications
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