Fitness trackers, wearable devices that track people's step count, heart rate, and calories burned, generate a lot of data that is sent over the internet (sometimes insecurely), and used by device manufacturers in often untransparent ways.
Every Step You Fake: A Comparative Analysis of Fitness Tracker Privacy and Security is a report by Open Effect, a not-for-profit research group, with significant contributions from the Citizen Lab at the Munk School of Global Affairs, University of Toronto. The report describes security and privacy issues found in fitness wearables and their implications for consumers and policy makers.
This report is the product of a year-long study that used three different methodologies to better understand what fitness tracking companies are doing with consumer's personal inromation. We employed technical analysis to observe actual data transmissions, policy analysis to understand the rights companies give to themselves and others, and a method where research participants filed legal requests for access to their data.