applications of Force sensing Resistor (FSR)

no the thing is that we were told to make a force meter using the sensor which we did. but at the last moment he said show me another application of it other than force. So now i'm stuck that what to do with the sensor.

wvmarle:
That's because you go the wrong way around.
The normal order is to first identify a need (the application), then come up with a sensor that can fulfill this need.