BackTrack 5 brings Mac users a new level of safety by logging all text (except passwords) that is typed for all applications. The log includes a screenshot (the entire desktop or just the topmost window), the application name, window name, date & time, and how long the window was the front window. 

BackTrack 5 requires Mac OS 10.5 or greater.  BackTrack 4 requires OS 10.4 or greater (BackTrack 4 does not have screenshot logging).

Suppose you're working on a MS Word document, you haven't saved the document for awhile, and Word crashes. Normally you would have lost all the text you typed since your last save, however, since the text is also in the BackTrack file, the text you typed has been saved. Simply copy the text from BackTrack to the clipboard, and paste it onto your Word document. Another example, you sent an email two weeks ago, and you're not sure what was in the message. Since you delete all email over a week old, you can't find the email message in your email application. What to do? Simply search the BackTrack file for the day you wrote the message!