This is a pretty cool device for interfacing the body with the computer:
A couple of years ago I built the precursor to this from Marco Donnaruma’s schematics, and used it in a performance. (The earlier version used electret condenser mics to pick up muscle sounds, and puredata to process them for audio and control.) It was a revelatory experience.
(Note: I’m a fan and supporter, but not affiliated in any way with the XTH Sense team.)