In recent years, big data sets from mobile phones have been used to provide increasingly accurate analyses of how we all move between home, work and leisure, holidays and everything else. The strength of basing analyses on mobile phone data is that they provide accurate data on when, how, and how far each individual moves without any particular focus on whether they are passing geographical boundaries along the way—we simply move from one coordinate to another in a system of longitude and latitude.
source https://phys.org/news/2020-11-mobility-paves-tomorrow.html