GPC signal detected but no visible confirmation displayed
This check looks for whether the site displays a visible message confirming that it has honoured a visitor's Global Privacy Control (GPC) signal, the browser-level setting that communicates an opt-out preference automatically. On this site, the browser's navigator.globalPrivacyControl signal is detected, but no confirmation such as 'Opt-Out Request Honored' or similar wording is shown to the visitor.
Why this matters
If California's CCPA applies to you, regulators have indicated that a visible confirmation that an opt-out signal such as GPC has been applied is expected, not just a silent backend response. California's regulator has previously announced an enforcement settlement involving opt-out signals, so this is an area it watches. Whether it applies to you depends on your size, data and where your visitors are, so check with a privacy adviser.
How to fix it
Your developer should add a check for navigator.globalPrivacyControl being true, and when it is, render a visible 'Opt-Out Request Honored' notice somewhere on the page, such as near the footer or privacy settings. This is a small front-end change, roughly two hours, and can be tested by enabling GPC in a browser like Firefox or via a browser extension.
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