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Defcon 2006: The man behind the Defcon badge
Friday, Aug 11th, 2006   |  Read the Full Article

This year’s Defcon computer security convention had a high-tech badge for an equally high-tech crowd. The circular badge was a colored circuit board complete with a small computer chip, battery and two blinking LED lights. Defcon staff wanted the badge to be difficult to counterfeit, but easy enough to add some interesting hacks.

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