title: Generate unique id for each device
body: <p>I want to generate a unique id for each device. Currently I am using fingerprint.js for this. My code is:</p>
  
  <pre><code>var fingerprint = new Fingerprint().get();
  </code></pre>
  
  <p>But I want to generate unique id with out using any plugins. Can any one help me please? </p>