title: User recognition without cookies or local storage
body: <p>I'm building an analytic tool and I can currently get the user's IP address, browser and operating system from their user agent.</p>
  
  <p>I'm wondering if there is a possibility to detect the same user without using cookies or local storage? I'm not expecting code examples here; just a simple hint of where to look further.</p>
  
  <p>Forgot to mention that it would need to be cross-browser compatible if it's the same computer/device. Basically I'm after device recognition not really the user.</p>