Today I'm going to show you how to create an encrypted hidden container volume using Truecrypt.
What is a hidden volume?
Lets say that you have some very sensitive files that is encrypted on your computer and someone (roommate, government, someone with a gun) wants to look at those files. However, you do not want to release those files but instead show them a different set of files that are similar (or fake). You then can release a different password to them that will only show them the other non-sensitive files keeping the real files safe from exposure.