The U.S. Navy’s New Unhackable GPS Alternative: The Stars
26th April 2021
For centuries, using a sextant, a sailor could mark a ship’s location by making a few calculations to determine a star’s position relative to the horizon. Now a high-tech version of this maritime tradition is finding its way back into practice.
GPS is indispensable these days—but it’s still incredibly fragile. It can be spoofed with a fake satellite signal, hacked by an adversary, or simply destroyed. Spoofing, hacking, or destroying the stars? Not happening.