SkinTrack: Using the Body as an Electrical Waveguide for Continuous Finger Tracking on the Skin
summary
A wearable system implements a finger-worn signal emitter and a multi-electrode wristband that measure phase differences of a high‑frequency AC wave to produce continuous 2D touch coordinates. The prototype uses an 80 MHz emitter, a ring + wristband with four electrode pairs, runs Bluetooth sampling on a microcontroller, and logs >100,000 trials with 12 participants. It segments touch states at ~99% (98.5% reported), achieves a mean error 7.6 mm and requires a 15‑hour battery in its current form.
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chapters (8)
- 0:00Introduction and overview
- 1:52Sensing principles and challenges
- 4:44System design and components
- 8:15Live demo and calibration
- 10:02User study and accuracy results
- 13:53Interaction modalities and applications
- 16:50Limitations and future work
- 17:15Conclusion and Q&A
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