It certainly appears not.  They&#x27;re using curl and reporting a UID they generate.<p><pre><code>   A Homebrew analytics user ID e.g. 1BAB65CC-FE7F-4D8C-AB45-B7DB5A6BA9CB. This 
   is generated by uuidgen and stored in ~&#x2F;.homebrew_analytics_user_uuid. This 
   does not allow us to track individual users but does enable us to accurately 
   measure user counts vs. event counts 
</code></pre>
<a href="https:&#x2F;&#x2F;github.com&#x2F;Homebrew&#x2F;brew&#x2F;blob&#x2F;master&#x2F;share&#x2F;doc&#x2F;homebrew&#x2F;Analytics.md" rel="nofollow">https:&#x2F;&#x2F;github.com&#x2F;Homebrew&#x2F;brew&#x2F;blob&#x2F;master&#x2F;share&#x2F;doc&#x2F;homeb...</a><p>Of course, you have to trust homebrew, but hell, you&#x27;re already running their software, so it&#x27;s a little late.