I read a story about a floor that produces electricity when stepped on.What type of material was used?

Answer 1

It would use a piezoelectric material. That material generates electricity in response to pressure.

Answer 2

Any floor, like wood floor will produce electricity when you step on it. It is created by the heat between the friction of the shoes and the floor. The elctricity will be in your body and will be discharged when you touch something plastic, and you will feel a shock.