By this trick you can get the password of any Wi-Fi Network Connected to your Laptop. To Know the Password just follow these Steps :-
1. Open your networks.
3. After Selecting Properties you will get a Dialogue Box. Choose Security option from the Tabs Available.
4. In Security Tab you will find the Details about password. Wi-Fi Password is labeled with Network Security Key. If it is not visible just check mark Show Characters button labeled to Show your password in Character.