Note — Dec 16, 2018

Your Apps Know Where You Were Last Night, and They’re Not Keeping It Secret

One of those articles where we already know most of what’s referred to but reading (and scrolling through the visuals) everything attached together is a good reminder of the current situation and its excesses.

Several of those businesses claim to track up to 200 million mobile devices in the United States — about half those in use last year. The database reviewed by The Times — a sample of information gathered in 2017 and held by one company — reveals people’s travels in startling detail, accurate to within a few yards and in some cases updated more than 14,000 times a day. […]

The mobile location industry began as a way to customize apps and target ads for nearby businesses, but it has morphed into a data collection and analysis machine. […]