title: disable all home button and task bar features on Nexus 7
body: <p>I am building an app that will form part of an exhibition. It will be displayed on a Nexus 7 which will be securely mounted. The app has touchscreen functionality and will display interactive content.</p>
  
  <p>I need to be able to disable as many features as possible whilst on display as I do not want the public to be able to get to anything other than the app.</p>
  
  <p>The main thing I am struggling with is the back/home/recent app list button. I have found some examples of disabling home button (child lock <a href="https://stackoverflow.com/questions/2162182/android-is-it-possible-to-disable-the-click-of-home-button">Android - Is It possible to disable the click of home button</a>
  ) but ideally I need the buttons to be invisible, so to turn off the 'glow' (black would be fine).</p>
  
  <p>Is the bottom section on a Nexus 7 protected in some way, is there another version of Android that would allow me to do this? The Nexus device will only be used for displaying this app, no other functionality is needed.</p>
  
  <p>Any suggestions would be great and very much appreciated.</p>