TouchTokens: Guiding Touch Patterns with Passive Tokens
summary
TouchTokens uses passive 3D‑printed tokens placed on a multitouch surface to force consistent finger layouts, a template‑matching recognizer compares sorted, rotation‑aligned touch point sets, and notched tokens remove grasp ambiguity. A formative study on 12 shapes showed 50–75% recognition; redesigned six notched tokens reach ~99% recognition on tablet and 98% on tabletop without per‑user training. The system ships as a TUIO/Android API and supports gestures like rotate and slide.
AI-written summary · about