Without making any sort of judgement on his claim (in any direction), I think he is referring to gpsd: https://en.wikipedia.org/wiki/Gpsd https://en.wikipedia.

Without making any sort of judgement on his claim (in any direction), I think he is referring to gpsd: https://en.wikipedia.org/wiki/Gpsd https://en.wikipedia.org/wiki/Gpsd http://git.savannah.gnu.org/cgit/gpsd.git http://git.savannah.gnu.org/cgit/gpsd.git