California AB 566 California Opt Me Out Act and universal browser opt-out preference signals

California’s AB 566: What Ecommerce Businesses Need to Know About Universal Opt-Out Signals

Ecommerce Innovation Alliance

September 18, 2025

California AB 566, known as the "California Opt Me Out Act," has recently cleared the state Legislature and is poised for Governor Newsom’s signature. This bill, if signed into law, will require internet browsers to integrate a consumer-configurable opt-out signal, fundamentally changing the landscape of data sharing and consumer privacy for businesses operating online. This signal will communicate a consumer's choice to opt out of the sale and sharing of their personal information to businesses they interact with through the browser.…

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