Developing a small mechanical drive which fits into a sole of a shoe:
-> when putting the foot onto the ground, the mechanical devices "loads energy"
-> when lifting the foot up, the "loaded energy" turns small wheels on the sole of a shoe what leads to a forwards glide for the lifted shoe
-> small wheels hide in the sole when foot is completely on the ground (safe stand for the person) and come out when lifting the foot up
-> without electronic support, just mechanical solution