WASHINGTON—The Pentagon is reviewing policies that allow deployed troops to use activity-measuring devices and fitness apps that rely on GPS tracking, after publication of a digital map online accidentally exposed information that could reveal where American troops are deployed or even precisely where they exercise overseas. An interactive display called the Global Heat Map, published online by the fitness app Strava, is based on satellite information gathered to track the location and activity level of its users.

Source: Wall Street Journal January 30, 2018 05:32 UTC