Quick and simple ways to unlock those Microsoft Word, Zip, or PDF files that you've forgotten the password to. If you want to make sure that only you and your compatriots can access certain documents, encrypting and password protecting said documents is the obvious way to go. To this end, many popular software packages provide a method of safeguarding files, generally based on a password. This is fine, but what if you forget the password? You might as well have deleted your work, right?