I know it looks a little like a sonic screwdriver, and, well, it's not, but it does have many uses! For starters, it's a working pen. For seconds, it has a handcuff key, but a good ol' geek like you wouldn't need one of those, right? For thirdsie's, a glass-breaking-spike! And, it's tiny, convenient, and inconspicuous! Stealthy!