[chrissyb]

Your foot pedal idea is really interesting, i also just thought that there is a certain amount of pivoting ankles can perform while seated. So the two feet holsters could pivot from side to side and forward and backward. If all these movements were linked to potentiometers, calibrated to an individuals movement that gives you a total of 6? variable inputs.

You're definitely on the money with your reference to the girl from your school too, our feet's dexterous movements are surely only limited by use/practice.