Your Apps Know Where You Were Last Night, and They’re Not Keeping It Secret (The New York Times)

The millions of dots on the map trace highways, side streets and bike trails — each one following the path of an anonymous cellphone user.

One path tracks someone from a home outside Newark to a nearby Planned Parenthood, remaining there for more than an hour. Another represents a person who travels with the mayor of New York during the day and returns to Long Island at night.

You can read the full article on The New York Times here.