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Constitutional Law,
Administrative/Regulatory

Aug. 20, 2015

Go Fourth! Cell location data needs a warrant

Judge Lucy Koh recently issued a ruling finding the Fourth Amendment requires a warrant prior to collecting cell data. A week later, the 4th Circuit issued a similar ruling.

Mary Ellen Callahan

The Walt Disney Company

Email: mary.ellen.callahan@disney.com

PIG Tales: This regular column is devoted to issues of critical importance to the Privacy and Information Governance (PIG) communities. Provided by the former chief privacy officer of the U.S. Department of Homeland Security, PIG Tales discusses cutting edge issues while offering valuable insight and practical advice to companies on how to collect, use, store, protect and share their sensitive data in an efficient, effective, and compliant manner.

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Jarrell A. Cook

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PIG Tales

On Aug. 5, the 4th U.S. Circuit Court of Appeals issued a decision holding that the Fourth Amendment prohibits law enforcement from acquiring an individual's location information over an extended period of time from a cellphone provider without a warrant. A week earlier, Judge Lucy Koh of the Northern District of California issued a similar ruling, finding the Fourth Amendment requires a warrant pr...

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