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

Written by CRETech | Dec 11, 2018 12:59:36 PM

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.