Easy navigate / Medical auxiliary equipment

This product is navigation which is placed at the ankle.
.When they walk on crutches, they can’t go up and down stairs easily.
Instead walking, using escalator or elevator could be better.
At this point, I want to interwork it with GPS in smartphone.
People just check the destination through smartphone. And then easy navigate will help you go to the destination easily and quickly by shooting laser to the ground.
By using robber material in this product, people don’t have to worry about being slippery.
I just named this product “easy navigate” which means “going to the place where you want to easily and conveniently.”