There seems to be little room for doubt that Etak was first to make available a digital system that used map-matching to improve on dead reckoning instrumentation, which arguably made car navigation systems practical for the first time.
There seems to be little room for doubt that Etak was first to make available a digital system. This digital system used map -. This digital system was matching to improve on dead reckoning instrumentation. Dead reckoning instrumentation arguably made car navigation systems practical for the first time.