@ Grumpy_Mike, oh yah, forgot to mention, there is peizo resistive pressure sensors (may be called FSR in some product). Eg Embedded Force Sensors | Tekscan
Advantage of it is that its thin and flat as paper. My intention was to place it in shoe sole.
Unfortunately I need an op amp to convert that to voltage (shouldn't be an issue). Only problem is that I'm afraid it will break easily. Seems like its on some professional gait analysis device (I may be wrong).
Thanks again for your advice.