4 ms·
The GPS project began in 1973. Digital signatures were invented in 1976. I'm guessing adding it on after the fact would have been very expensive.
by bean-weevil 2y ago
The GPS project began in 1973. Digital signatures were invented in 1976. I'm guessing adding it on after the fact would have been very expensive.
- toomuchtodo 2y agoThere have been progressive improvements as new satellites are brought into service, and those end of life retired. Perhaps backwards compatibility? https://en.wikipedia.org/wiki/GPS_signals#Legacy_GPS_signals https://en.wikipedia.org/wiki/GPS_signals#Legacy_GPS_signals https://en.wikipedia.org/wiki/GPS_signals#Modernization_and_additional_GPS_signals https://en.wikipedia.org/wiki/GPS_signals#Modernization_and_...