Walk and Talk For Hours Using Shoe Power

The power created from walking creates a bridge from the phone to a cellular network, which dramatically extends battery life. Image courtesy of InSetep NanoPower. Taking the stairs could mean more time between charges for your phone.
Researchers at University of Wisconsin at Madison have developed a shoe insert that uses the impact of your strides to generate electricity for your phone. The prototype “footwear-embedded harvester” consists of two pouches filled with nanoparticle liquid metal called galinstan.

Gadget Lab, Walk and Talk For Hours Using Shoe Power