CA AB566

Requires businesses that develop or maintain web browsers to include user-configurable functionality that sends opt-out preference signals to websites, preventing the sale or sharing of consumers' personal information

Browser developers must make the opt-out functionality easy for reasonable consumers to locate and configure, and must publicly disclose how the signal works and its intended effect

Grants browser developers immunity from liability if a business receiving the opt-out preference signal violates privacy law

Authorizes the California Privacy Protection Agency to adopt regulations to implement and administer these requirements

Takes effect January 1, 2027, and is officially titled the "California Opt Me Out Act"