Laurence Kemball-Cook is the one behind the Pavegen system, where it will convert kinetic energy from footsteps into usable electrical energy. Instead of requiring direct action of any kind from an individual, the Pavegen system was specially designed to harness the passive footfalls of pedestrians in order to generate power that can then be used for other public infrastructure such as traffic lights and the works. This is what we call crowdsourcing power, and most folks who do not look down while they walk would not even notice it!