Have you ever had to close an application with private info in order to let someone else use your PC? LockThis! is a windows application that lets you secure individual programs without the hassle of having to save your progress and closing the program. To use LockThis! just hold the control key and click on the application that needs to be locked and simply enter your password on the dialog that pops up and your done. Now anyone can use your pc without you having to look over their shoulder. The program can be unlocked by re-entering the password. The key combo to lock programs can also be changed.