If California’s new digital privacy law were a smartphone app, the 18-month period between its passage and its effective date might be considered beta testing.

Gov. Jerry Brown signed the measure, one of the strictest such laws in the U.S., on Thursday. It won’t take effect until Jan. 1, 2020, however, a gap intended to give the tech industry time to work with lawmakers on tweaking it after a rushed passage that forestalled an even more stringent ballot initiative by the Californians for Consumer Privacy campaign.