s a content storage mechanism originally introduced to support ServiceWorkers. If the same Cache object is accessible to multiple websites, it can be abused to track users.</span></div></td><td><div class='dataPoint tooltipParent bad'
> &nbsp;
<span class="tooltipText">write: async (key) =&gt; {
      try {
        let cache = await caches.open(&quot;supercookies&quot;);
        cache.addAll([`test.css?key=${key}`]);
      } catch (e) {
        throw new Error(&quot;Unsupported&quot;);
      }
    }

read: 