How Etak Built a Car Navigation System In 1985
harrymcc writes: Thirty years ago, a startup called Etak released the Navigator, an in-car navigation system. It provided turn-by-turn driving directions despite the fact that GPS did not exist, and stored its maps--which Etak had to create itself--on cassette tapes. And some of its data and technologies are still in use in today's navigation apps. Over at Fast Company, Benj Edwards tells this amazing story. I remember reading about (and lusting over) this system back then, in the much-missed DAK catalog.
And I'm old enough to know that's "dead reckoning".