It is a tiny Windows utility that makes it possible to password protect almost any programs or documents that's currently running/open.
LockThis! may not be a good way to keep peering eyes of computer geeks since it can be manouvred to unlock (this was made on purpose to be used in the even you forget a password), but for those who are just regular uses, it should be a good way to keep them away from seeing your stuff.
How to use LockThis!
Mostly it only involves pressing keyboard Ctrl button when minimizing the window of the program/document and supply the password in the dialog that follows (or you might had chosen to use a predefined common password, which in this case you won't be asked for password). Now the content is save because the window can not be restored or maximized without supplying correct password. Whenever the window is about to restore or maximize a dialog asking for password will pop up. If the correct password is not supplied, the restore or maximize request will be ignored and the window stays minimized.
LockThis! fails to work with Firefox 3 and Internet Explorer 8 browsers, most probably due to some security lines in those browsers.
LockThis! is a product of http://duriosoft.info/products/lockthis.html