[11Spades]

Maybe I just didn't read carefully enough, but I'm having a hard time understanding what the sensors are actually meant to detect. Is this a foundational technology for a suite of different sensors, or just used for heart-rate monitoring, or..?

[stubish]

Yes. My reading is they are printing wires, and the sensor bit is science fiction. Maybe the actual sensors are external, picking up deformation or position of the printed gunk?