He is also the maintainer of gpsd so some of the gps material might have been for the gpsd project in general. From what I understand the GPS device is just us

He is also the maintainer of gpsd so some of the gps material might have been for the gpsd project in general. From what I understand the GPS device is just used for getting accurate time stamps (via gpsd not ntp reference implementation). It is odd because no self respecting time-nut[1] would use PPS over usb, too much jitter. But the meat of the project will be the system for measuring latency so its not vital that the measuring nodes have microsecond offset agreement. [1] http://www.leapsecond.com/time-nuts.htm http://www.leapsecond.com/time-nuts.htm