A recent ACLU audit of local law enforcement practices highlighted how there's really no rules being followed in terms of wireless consumer surveillance. California is now cooking up a bill that would block governments and law enforcement from obtaining location information from cellphones without a warrant. State Sen. Mark Leno (D-San Francisco) has proposed SB 1434, an amendment to the Penal Code, which would limit search warrants to a time frame "no longer than is necessary" and not exceeding 30 days. "Unfortunately, California’s privacy laws have not kept up with the electronic age, and government agencies are frequently accessing this sensitive information without adequate oversight," Leno said in a statement.