Android: Disabling or Blocking the back button

One of the tablet apps I've been working on is a massive data collection app. It is set up to run in vertical mode and it's easy for the user to accidentally push the back button and exit a data collection form potentially losing their work.  Luckily it is also easy to disable the back button by preventing the click action or putting a dialog up when it is touched to confirm the exit of the screen.

Here you go. Nothing to it.

@Override
public void onBackPressed() {
}