What do you do when you find your cell phone is out of power when you are outdoors?

A teacher in India has invented a shoe that can charge batteries for mobile phones and batteries. This can greatly facilitate people who work outside the house. They can charge their phones whenever and wherever they walk.

The inventor of this charging shoe is Sharma, a chemistry teacher.

He installed a pmission device and a small generator in his shoes.

When walking on this kind of charging shoes, the pmission device can pfer the pressure generated by people's walking to the generator, and then the generator can generate electricity and charge the cell phone.

At present, Sharma has applied for a patent for his charging shoes and is ready to be put into production, which is expected to cost around $4.