title: Ways to detect CTRL-N or when a user opens a new window
body: <p>How can we detect when a user opens a new window.  The user is already authenticated and we make heavy use of sessions.</p>
  
  <p>We were trying to avoid <kbd>Ctrl</kbd>+<kbd>N</kbd> javascript hooks but maybe that is an option.</p>
  
  <p>I am assuming the request is the exact same URL...with <kbd>Ctrl</kbd>+<kbd>N</kbd>?</p>