title: Get Specific Device Information
body: <p>Using just PHP, is there anyway to detect if the page is being loaded from a SPECIFIC device? Say, I would want the page to react differently if only MY iPhone was loading the page, no one else's?</p>
  
  <p>The only solution I have so far is to use $_SERVER['REMOTE_PORT' in conjunction with $_SERVER['HTTP_USER_AGENT'], to verify iPhone, but that doesn't ensure a <strong>specific</strong> iPhone..</p>