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Chicago Lock Co. is a lock manufacturer, founded in Chicago in 1920. Since 1933, it has sold a tubular pin tumbler lock marketed under the registered trademark "Ace." Millions of Ace locks have been sold; for instance, these locks are used in Northwestern Corporation's Triple Play bulk vending machine.[citation needed] In 2004 it was widely publicized that the barrel of a cheap ballpoint pen would act as an effective lock pick for many brands of tubular lock.[1]
- ^ "Kryptonite Evolution 2000 U- Lock hacked by a Bic pen". Engadget. Retrieved 2012-08-13.