code: function getFingerData( id ) {
  			for(var i=0; i<fingerData.length; i++) {
  				if(fingerData[i].identifier == id) {
  					return fingerData[i];	
  				}
  			}
  		}
docs: Returns a finger data object by its event ID.
  Each touch event has an identifier property, which is used
  to track repeat touches
  @param {int} id The unique id of the finger in the sequence of touch events.
  @return a finger data object.
  @inner