GPS has made a major impact on our world. How is it a free service that anyone with a phone can access? How is it profitable for companies to offer services like navigation without subscription fees or ads?
In: Technology
Because in [1983 a Korean Air 747](https://en.wikipedia.org/wiki/Korean_Air_Lines_Flight_007) experienced a problem with its navigation computer that’s inherent to every inertial navigation system called drift and accidentally flew over part of the Soviet Union. It was shot down killing everyone onboard. After this, Ronald Reagan made it available for everyone to use. The US Space Force maintains it; the military uses a more accurate version of it using the same satellites broadcasting on different frequencies.
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