The main element required to take advantage of the applied force our fingers apply to the keyboard is piezoelectric sensors. It is a device that measures change in the pressure and applied force and converts them into electrical charge. Each time laptop users start typing, the piezoelectric sensors placed under keyboard buttons store the energy with the help of capacitors in rechargeable batteries.The users can easily see the approximate amount of time that energy on the battery will keep working from LCD on the top-side of the keyboard. Once the wireless keyboard is connected to the computer anyone can monitor the statistics of the battery from their computers. You see our 3 prototypes in order.