SmartTokens: Embedding Motion and Grip Sensing in Small Tangible Objects
summary
SmartTokens are pocket-sized tangible tokens with six touch sensors and an accelerometer that wirelessly send state transitions; each token runs a simple four-state machine (touch × motion) so transitions become discrete input events. The team builds functioning prototypes, shows a token dispenser for notifications, demonstrates pinch/grasp/shake detection, reports parts cost around $5–$20, and publishes the open-source hardware and firmware on GitHub; wireless charging via touch antennas is proposed.
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