Calling it a significant victory for privacy rights, civil rights advocates Monday hailed a U.S. Supreme Court ruling that requires law enforcement officials to obtain a search warrant before they can attach a GPS tracking device to a vehicle.
But they expressed some disappointment over the court's decision to leave untouched the broader issue of whether police are required to obtain search warrants for all kinds of geo-location tracking technologies, such as cellphone tracking systems or RFID tags.

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