As the cyclists of the Tour de France pull into Paris, they will have collected not just an array of jerseys, crashes, drama, records and more than 2,000 miles of cycling. They also bring with them a vast array of data, second-by-second accounts of their body in the 21 days of riding their bikes that have come before.
The online abuse the England football team received after the Euro 2020 final has pushed people towards drastic measures to stop it happening again: giving social media companies their legal identification.