Mobile phones will be charged with the foot instead of electricity now. It is meant that smartphones can charge with the shoes. The students of Rice University, US have prepared such kinds of shoes that will also charge the phones while walking. These shoes produce energy while walking and charge the phone battery.
This new technology is the creation of 4 intelligent students belonging to US. According to the sources your foot can produce energy which no other part of body can, and keeping in mind these students designed the shoes which produce energy with the help of foot. The produced energy with the help of shoes will be enough to charge the smartphones.