Quite happy with this result of the conversation, I went to the local electronics store and bought some potentiometers. Fooled around with them for a bit and then built a little remote-controlled robot, using the poti's as interface.
Step two was to mess around with ways of attaching the poti's to my body. By moving I would then create a signal with which I hope to later on be able to induce the same movement from the NAO.
Here’s an image of my first attempt at doing something like this
And here’s a short video