GPS has transformed everything from driving to search and rescue. But it currently relies on government-run satellites that have trouble peering into canyons and forests—and which can be targeted by enemy countries. Now, engineers have demonstrated rudimentary location tracking by eavesdropping on signals sent by internet satellites. If refined to GPS levels of accuracy, the approach could help scientists who use GPS to track animals and earthquakes. https://www.science.org/content/article/scientists-create-their-own-gps-spying-internet-satellites
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