A Baltimore judge concluded that law enforcement hid its use of a Stingray device by using a pen register order, violating disclosure obligations. The decision resulted in a landmark 2015 privacy ruling that police must obtain a warrant to use such cell‑site simulators. The ruling highlights judicial limits on warrantless location tracking.
Why it matters: The ruling establishes that police need a warrant to deploy stingray technology, protecting privacy rights against warrantless surveillance.
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