from skimming the paper, the big advance here is a moisture/oil resistant "triboelectric nanogenerator", which generates energy from touch or vibration, and the

from skimming the paper, the big advance here is a moisture/oil resistant "triboelectric nanogenerator", which generates energy from touch or vibration, and they could get stable power out of it long enough to do a bluetooth transmission with a standard (conventional) bluetooth chip (an adafruit bluefruit, apparently) the moisture/oil resistant part is a big deal for actually using it in the real world