Sensitivity issues

I was wondering if there was any way to increase or decrease the sensitivity of touches. Also, Could the trackpad sense touches like sand or sugar?

Set contact min force:

The Morph can detect force from any material. Each sensing element detects forces approximately between 5g and 5kg. However, the Morph is not designed to work as a scale. Additionally any forces applied to the Morph slowly over time will be removed due to base lining. To turn off base lining, please use: