The California Electronic Communications Privacy Act (CalECPA), S.B. 178, requires state law enforcement to get a warrant before they can access electronic information about who we are, where we go, who we know, and what we do. Introduced by California State Senators Mark Leno (D-San Francisco) and Joel Anderson (R-Alpine), CalECPA was sponsored by EFF, ACLU of Northern California, and the California Newspaper Publishers Association, and supported by a wide variety of rights groups and technology companies.
After passing out of both chambers of the California legislature with 2/3 support, Gov. Jerry Brown signed the bill on October 8, 2015.