Many a times reasoning that computer is locked is not just enough for your mom or dad to keep away unwanted visitors who want to use your computer for doing something just for 2 minutes which ultimately leads to total sneak peek of your computer. How about locking the application itself ?
Lock it is simple windows application which locks any of the running applications and also can give unwanted visitors that “you should not be using my computer for internet” signal to many people without hurting them.
Once you have installed the application to lock any window just keep the CTRL key pressed when minimizing the application and it will get locked. Anybody trying to open that window will be prompted for it. The default admin password is (without quotes): “LockThis!”. ( That took me a while to figure duh!) Download Lock this Via Nirmal TV