Stingrays, also known as “cell site simulators” or “IMSI catchers,” are invasive cell phone surveillance devices that mimic cell phone towers and send out signals to trick cell phones in the area into transmitting their locations and identifying information .
Read moreWhat cities use stingrays?
Compared to other large cities, like Boston, New York City and San Diego, Baltimore, Maryland has a much higher use of stingrays. According to a member of the Baltimore Police Department, the agency used stingrays 4,300 times since 2007.
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