title: Captive portal on android device
body: <p>I am using my android device as a mobile web server. I want to direct every user that connects through my portable Android hotspot to a specific wellcome page. </p>
  
  <p>Does anybody know how to implement this technique in my device (I believe this is called the <a href="http://en.wikipedia.org/wiki/Captive_portal" rel="noreferrer">captive portal</a> technique)?</p>