title: Detecting how hard someone is pushing the screen on wp7
body: <p>I am trying to detect how hard someone is pushing the wp7 screen for a drawing application. Is there a way to detect how big surface area is where the screen is being touched. I reckon that would be a reasonably accurate way to determine how hard the screen is being touched - A light touch would have a small touch surface area while a hard press would have a bigger touch area. </p>
  
  <p>Has anyone ever tried something like this?</p>