EMFi force sensitive sensors were glued on top of a computer mouse and the force signals were recorded when the user performed an near-natural sequence of mouse use tasks. The recorded signals from the top are wrist rest (notice the possibility to detect the pulse of the user), the left mouse button, the EMFi strip on top of the mouse, the right mouse button, the left side of the mouse and the right side of the mouse. The signals shown were filtered with a 30 Hz low-pass filter. The x axis is time in seconds. The y axis is in arbitrary units as we did not try to calibrate this measurement.