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AB-566 • 2026

California Consumer Privacy Act of 2018: opt-out preference signal.

California Consumer Privacy Act of 2018: opt-out preference signal.

Privacy
Enacted

This bill passed the Legislature and reached final enactment based on the latest official action.

Sponsor
Lowenthal
Last action
Official status
Chaptered
Effective date
Not listed

Plain English Breakdown

The source text defines when the law begins (January 1, 2027) but leaves the specific effective date field in the metadata blank.

AB-566: Browser Opt-Out Signal Requirements

Starting January 1, 2027, this law requires web browsers to include a setting that lets users send a signal telling companies not to sell or share their personal information.

What This Bill Does

  • Prohibits businesses from developing or maintaining web browsers without a consumer-configurable feature to send an opt-out preference signal starting January 1, 2027.
  • Requires browser makers to explain in public documents how the opt-out preference signal works and its intended effect.
  • Grants immunity from liability to browser makers if other businesses ignore the opt-out signals sent by their browsers.
  • Authorizes the California Privacy Protection Agency to create regulations needed to carry out these requirements.

Who It Names or Affects

  • Businesses that develop or maintain web browsers
  • Consumers who use those web browsers
  • The California Privacy Protection Agency

Terms To Know

Opt-out preference signal
A digital message sent from a browser to tell a company not to sell or share the user's personal information.
Browser
Software used on computers and phones to view websites, as defined by law.

Limits and Unknowns

  • The exact technical details of how the signal must work are not specified in this text but will be determined through future regulations.
  • While the bill states it begins January 1, 2027, the official effective date field in the metadata was left blank.

Bill History

  1. California Legislative Information

    Chaptered

Official Summary Text

California Consumer Privacy Act of 2018: opt-out preference signal.