New from 404 Media: CBP tapped into the online advertising ecosystem to track peoples' movements, according to an internal DHS document. Shows for the first time DHS tracked phones via process for putting ads in ordinary apps—video games, fitness apps, many more https://www.404media.co/cbp-tapped-into-the-online-advertising-ecosystem-to-track-peoples-movements/
@josephcox The NRK did a similar investigation a couple of years ago here in Norway.
They bought "anonymised" data from brokers in London and then by analysing this data were able to identify the people the data was collected from.
Simply put, a device comes out of a given house every morning, drives, via a given school to a given place of work and then back home in the afternoon.
It does not take that much effort to work out who exactly that device belongs to.

