Even though we live in an age of blogging, some of us still prefer putting our thoughts down so only we can see them. If you don’t want one of those traditional locked notebook model of a diary, then the Secret Diary is probably for you.
Good news: It’s completely DIGITAL. That’s right.
The Secret Diary looks similar to a USB Flash Drive, but that’s just its cover. It lives up to its name as the designated user must enter in a 4 digit Pin number on the built-in numeric keypad in order to get in. The data is stored via 256-bit AES cypto.
Unfortunately, there is another security feature that will hopefully never get used (But I think its kinda funny). Let’s say someone tried to hack their way into your Secret Diary.The Secret Diary has a built in self-destruct procedure that will erase all the sensitive information. Maybe you want to keep two of them, just in case? :3
It also has another interesting feature in which it has some kind of an emotion sensor that somehow analyzes the text you are writing and can display a swirl in the heading to match the “mood” of the writing.
Sadly, The Secret Diary has no release date or price attached to it as of yet. But when they do, one could bet they would be a hot buy for females.
Source:

http://www.coolest-gadgets.com/20080825/secret-diary-keep-your-writings-secure/#more-16424