Users are largely unaware of the privacy implications of some permissions they grant to apps and services, in particular when it comes to location-tracking information. Thanks to machine learning techniques, these data provide sensitive information such as the place where users live, their habits, interests, demographics, and information about users' personalities.
A Peer-Reviewed Publication by Mirco Musolesi (University of Bologna, Italy) and Benjamin Baron (University College London, UK) published on December 18, 2020: https://www.eurekalert.org/news-releases/728615