or dog collar to keep track of whereabouts afield. Regardless of how you enjoy the outdoors, like most hunters and anglers these days, you’ve probably tapped into the Global Positioning System in one ...

Perhaps you’re occasionally checking your smartphone’s built-in mapping software while driving to a remote trout stream, or using Google Earth on a home computer to scout out new hunting and fishing ...

The Coast Guard hacked this system with Differential GPS, forcing the U.S. to finally unlock full accuracy for civilians in 2000. Today, GPS isn’t just about directions—it’s the master clock for banks ...