A simple zero-config plugin to opt-out of Google "Federated Learning of Cohorts" (FLoC).

Hendrik Luehrsen

WP Munich

<p>A simple zero-config plugin to opt-out of Google “Federated Learning of Cohorts” (FLoC).</p>
<h3>Disable the tracking of your users with FLoC</h3>
<p><strong>Federated Learning of Cohorts</strong> (FLoC) is a replacement for third party cookies in chromium browsers like Chrome to target users with ads based on their interests. The proposed solution is better than using<br />
third party cookies, but it still raises concerns in terms of privacy and data protection.</p>
<h3>How does this plugin work?</h3>
<p>This plugin tells your WordPress system to send a special header that disables FLoC on your website. There is no configuration needed besides installing the plugin.</p>
<p>If you are a developer, we encourage you to follow along or <a href="https://github.com/luehrsenheinrich/wpm-floc" rel="nofollow ugc">contribute</a> to the development of this plugin <a href="https://github.com/luehrsenheinrich/wpm-floc" rel="nofollow ugc">on GitHub</a>.</p>
<h3>More about FLoC</h3>
<ul>
<li><a href="https://www.theverge.com/2021/3/30/22358287/privacy-ads-google-chrome-floc-cookies-cookiepocalypse-finger-printing" rel="nofollow ugc"><strong>The Verge</strong> – What is FLoC on Chrome and why does it matter?</a></li>
<li><a href="https://web.dev/floc/" rel="nofollow ugc"><strong>Web.dev</strong> – What is Federated Learning of Cohorts (FLoC)?</a></li>
<li><a href="https://adalytics.io/blog/google-chrome-floc" rel="nofollow ugc"><strong>Adalytics.io</strong> – Who is sharing data with Google’s FLoC ad algorithm?</a></li>
<li><a href="https://brave.com/why-brave-disables-floc/" rel="nofollow ugc"><strong>Brave Browser</strong> – Why Brave disables FLoC</a></li>
<li><a href="https://wicg.github.io/floc/" rel="nofollow ugc">The <strong>WICG</strong> Draft for FLoC</a></li>
</ul>
<h3>Blocking Methods</h3>
<p>This plugin offers different methods implement the FLoC blocking HTTP header.</p>
<ul>
<li><strong>None / Allow FLoC</strong>: This method does not provide an opt-out from FLoC.</li>
<li><strong>Simple / PHP</strong>: Works for most WordPress setups. Uses the “wp_headers” filter to provide the HTTP header.</li>
<li><strong>Apache / .htaccess</strong>: When you have to circumvent your cache. Only works on apache servers with the “mod_headers” module installed. Writes the HTTP header into the .htaccess file.</li>
</ul>
<h3>Compatibility with Cache Plugins</h3>
<p>This plugin relies on the ability to deliver HTTP headers to the browser. Some Cache Plugins actively strip these HTTP headers and therefore invalidate the purpose of this plugin.</p>
<p>These cache plugins are known to be compatible with the <strong>Simple</strong> method:</p>
<ul>
<li><a href="https://wordpress.org/plugins/wp-super-cache/" rel="ugc"><strong>WP Super Cache</strong></a> – You have to activate the “<em>Cache HTTP headers with page content.</em>” checkbox in the Advanced Tab of the WP Super Cache Settings.</li>
</ul>


Disable FLoC

Just install it and add "Permissions-Policy: interest-cohort=()" to your header to disable FLOC.

Easy, fast and No-Floc...

I like plugins that don't make me think. Does what is says and works! 

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