fitness tracker

The Secret Genius of Modern Life episode 5: Hannah Fry finds out how 1970s car crashes helped us to count our steps, why WWII dog-fights led to a crucial health monitor and how fitness trackers are even being used to catch killers. With around a third of the population now owning fitness trackers, Britain has become a nation obsessed with tracking its every move.       Hannah Fry is a British mathematician, author, and radio and television presenter. She is Professor in the Mathematics of Cities at the UCL Centre for Advanced Spatial Analysis. She studies the patterns of […]