Charge using your Body

In our day to day life we use our phones and many other appliances and what gives us a pain in the ass is the battery left in our devices. Most of us carry power banks in our pockets to get a quick charge but its all going to change according to a group of scientists from china stated that they had developed a tab that could be charged by taking advantage of our body movement.
"Our body is a source of large amount of energy and why can't we use it"says a scientist from the Buffalo university. This charging method is termed as Tribo Electroc Charging.