The bill signed Wednesday would require them to set up an easy-to-find mechanism that lets Californians opt-out with the push of a button, instead of having to do so repeatedly when visiting individual websites. “These signals are going to be available to millions more people and it's going to be much easier for them to opt out,” said Matt Schwartz, a policy analyst at Consumer Reports.
https://therecord.media/california-signs-law-opt-out-browsers