 <p>LocalStorage (in Chrome) is in the <a href="http://superuser.com/a/508207"><code>%LocalAppData%</code></a> directory, which is under the <a href="http://www.microsoft.com/security/portal/mmpc/shared/variables.aspx" rel="nofollow">user's account</a>. Internet Explorer stores them under <a href="http://stackoverflow.com/a/1412136/1216976"><code>%userprofile%</code></a> Precise location varies among browsers but is always within a user folder.</p> <p>So no, LocalStorage will not propagate across users.</p>