This may look like the most boring gadget you ever did see, but this, my friends, is the James Bond of gadgets - or at the very least, the kind of gadget James Bond would use if he wasn't too busy playing around with cars and women. This, you see, is a key logger: plug it into any keyboard socket, and it'll log every keystroke make, up to a limit of half a million characters.
What is it used for? Well, you could use it as a cheap backup for your important documents, but we all know what you'll really want to use it for is to find out what the other people who use your computer have been typing. Shame on you...
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These are VERY illegal in the US on public computers (At least at my university). Be really careful of what you decide to use it for.
Well, but that's too easy! Where goes all the thrill of poking over one else's shoulder?