Wired story about the origin of the cards: https://www.wired.com/2007/06/lock-pick-busin/ https://www.wired.com/2007/06/lock-pick-busin/ (I looked it up because

Wired story about the origin of the cards: https://www.wired.com/2007/06/lock-pick-busin/ https://www.wired.com/2007/06/lock-pick-busin/ (I looked it up because I thought they looked like some cards someone I knew designed, and sure enough…)