"How GPS Exercise data can reveal sensitive military locations" PBS NewsHour 1/29/2018
TECH NOTE: This problem would need to be solved by the publisher of the offending App. An example (in another form) is Google Maps blanking out areas of national security. This is done by Google.
SUMMARY: GPS data created by millions of people who use mobile devices or apps to track their exercise might also be revealing sensitive national security information. A 20-year-old Australian student discovered the locations of bases where military forces and intelligence services exercise by studying heat maps. John Yang talks to Zack Whittaker of ZDNet.