title: indoor positioning system using bluetooth without additional devices (e.g. ibeacon)
body: <p>I want to develop an app using the Indoor Positioning system to track the location of users of my app. i researched internet but couldn't find any way of developing it without the use of any additional devices other than mobile device like <code>ibeacon</code>. i found following git repo and docs which make use of <code>ibeacon</code>. </p>
  
  <p><a href="https://github.com/Estimote/iOS-Indoor-SDK" rel="nofollow">https://github.com/Estimote/iOS-Indoor-SDK</a></p>
  
  <p>Excerpt from the above link</p>
  
  <blockquote>
    <p>We know that building the next generation of context-aware mobile apps
    requires more than just iBeacon™ hardware. That's why we've built
    smarter software that abstracts away the difficulty of understanding
    proximity and position within a given space.</p>
  </blockquote>
  
  <p>I want to make use of mobile device's bluetooth. Suggest me the links or ways to achieve the IPS using bluetooth.</p>