“The breadcrumbs we leave behind when using our mobile phones—who somebody calls, for how long, and from where—contain unprecedented insights about us and our societies. Researchers have compared the recent availability of large-scale behavioral datasets, such as the ones generated by mobile phones, to the invention of the microscope, giving rise to the new field of computational social science. […] ” de Montjoye, Y.-A. et al. On the privacy-conscientious use of mobile phone data. Sci. Data. 5:180286 doi: 10.1038/sdata.2018.286 (2018).