Super Pumped: The Battle for Uber Highlight

What those readers didn’t know was that the armchair hacker had stumbled upon the secret InAuth code library, written inside of the Uber app as part of their secret deal. In order to fingerprint devices, InAuth required far more data than the average smartphone app, which meant asking for all sort of extended permissions. InAuth created device profiles based on this data to triangulate the users’ IMEI numbers. It was a clever technique, and companies besides Uber paid millions to use it. But the practice upset consumers when they discovered how much information they had unknowingly given Uber.