Supreme Court: Cops Can't Track Cell Phone Location Without A Warrant

The Supreme Court ruled Friday that law enforcement cannot track people's movements for periods of weeks or months without a warrant.

In a 5-4 ruling, the court held that the acquisition of cell-site records by government officials is covered under the Fourth Amendment.

Chief Justice John Roberts who wrote the opinion sided with the court's four liberal judges; Sonia Sotomayor, Elena Kagan, Ruth Bader Ginsburg and Stephen Breyer - while Justice Anthony Kennedy, Clarence Thomas, Samuel Alito and Neil Gorsuch dissented.

While stressing that their decision doesn't question longstanding surveillance techniques and tools such as security cameras, Roberts said that historical cell-site records present even greater privacy concerns than monitoring via GPS.

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