Strava’s fitness tracker heat map reveals the location of military bases
Strava is the maker of a fitness-tracking app that uses a phone’s GPS to track when and where a user is exercising, with an aim of being a type of social network for athletes. Last November, the site released a heat map showing the activity of its users from around the world, containing information from a billion activities across three trillion latitude and longitude points. The result is a pretty-looking image of people working out, but one analyst points out that the map makes it very easy... Читать дальше...