This bill was about Global Privacy Control (GPC) [1], which sites and mobile apps are required to respect under the California Consumer Privacy Act. The law is

This bill was about Global Privacy Control (GPC) [1], which sites and mobile apps are required to respect under the California Consumer Privacy Act. The law is enforced by the Office of the California Attorney General [2]. There is a draft specification at the W3C [3]. Disclosure: I am one of the co-founders of GPC and a spec editor. [1] https://globalprivacycontrol.org/ https://globalprivacycontrol.org/. [2] https://oag.ca.gov/news/press-releases/attorney-general-bonta-announces-settlement-sephora-part-ongoing-enforcement https://oag.ca.gov/news/press-releases/attorney-general-bont.... [3] https://privacycg.github.io/gpc-spec/ https://privacycg.github.io/gpc-spec/.