SkinTrack

Yang Zhang, Junhan Zhou, Gierad Laput, Chris Harrison
2016 Proceedings of the 2016 CHI Conference on Human Factors in Computing Systems - CHI '16  
SkinTrack is a wearable system that enables continuous touch tracking on the skin. It consists of a ring, which emits a continuous high frequency AC signal, and a sensing wristband with multiple electrodes. Due to the phase delay inherent in a high-frequency AC signal propagating through the body, a phase difference can be observed between pairs of electrodes. SkinTrack measures these phase differences to compute a 2D finger touch coordinate. Our approach can segment touch events at 99%
more » ... , and resolve the 2D location of touches with a mean error of 7.6mm. As our approach is compact, non-invasive, low-cost and lowpowered, we envision the technology being integrated into future smartwatches, supporting rich touch interactions beyond the confines of the small touchscreen.
doi:10.1145/2858036.2858082 dblp:conf/chi/ZhangZLH16 fatcat:2s6rxyfmcba7jil7kjpyu7e3aa