Worse still is people could use Polar to learn individuals' exact addresses with little more than Google Maps' Street View feature.
Polar Flow can reveal sensitive information about the lives of users, including intelligence agents, embassy workers, military men and women, workers at nuclear weapons storage sites, and so on.
"We found the names and addresses of personnel at military bases including Guantánamo Bay in Cuba, Erbil in Iraq, Gao in Mali, and bases in Afghanistan, Saudi Arabia, Qatar, Chad, and South Korea". However, it's more to make you aware of what data these sorts of devices and services collect and may share publicly if you're not very vigilant about you use them.
Reporters from Bellingcat and De Correspondent pinpointed thousands of intelligence personnel across the world. From a house not too far from that base, he started and finished many more runs on early Sunday mornings.
"We were able to scrape Polar's site. for individuals' exercise at 200-plus. sensitive sites, and we gathered a list of almost 6500 unique users", researcher Foeke Postma wrote.
For users signed up to this service, Explore has tracked every activity since 2014 and, considering this wealth of data, it was apparently relatively easy to determine details like a user's home address and the perimeter of a military base that doubles as a jogging route. I also suggest not connecting your fitness tracker to any of your social media accounts on sites like Facebook and Twitter - as we know, those can also already collect a whole mess of data on their own.
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He added: "The boat neck and cut is reminiscent of the wedding gown so it's a silhouette she knows wows". Missing was the queen's husband, Prince Philip, 97, who has retired from public life.
In contrast, the Polar Flow app discloses all the exercise information of a user on a single map, reports Bellingtcat on its website. Furthermore, changing your privacy settings in the app only affected new workouts - if you'd had your previous workouts set to "Public", they'd still be public even after you changed your privacy settings, according to Bellingcat. The profile shows his full name. Unlike Strava, a fitness app accused of exposing confidential data back in January, Polar's Explore feature allows anyone to click on any user whereas Strava only offered access via a user's profile page.
Polar responded to De Correspondent and Bellingcat's reporting by announcing that it was temporarily taking the workout map down. On Friday, the company issued a statement in which it said that it did not leak users' private information and that there had been no data breach affecting private data.
It also stressed that the vast majority of its customers have been using the default private settings and will not have been impacted.
"We recently learned that public location data shared by customers via the Explore feature in Flow could provide insight into potentially sensitive locations", read the statement in part.
Keep that in mind the next time you head out for a run.
L.V. Anderson is Digg's managing editor.