Ok, sure. It sounds like something out of an action movie. Sport Enthusiasts of Lockpicking – Europe member Ray used a hi-res camera to image the Dutch Police Hand Cuff Key. He then used a 3D printer to make a copy.
According to the lock picking blog Black Bag:
At first the police officers at HAR (Hacking at Random 2009, an international technology & security conference) were a little reluctant to event try out the plastic key he printed. But he found another way to verify the key he printed was the correct one. I guess these officers never thought about wearing keys concealed, especially when talking with Mr. Handcuff himself. Given the megapixel camera’s on the market today it was not so difficult to verify the key he printed was the correct one. At the end of the day he talked the officers into trying the key on their handcuffs and … it did work! At least the Dutch Police now knows there is a plastic key on the market that will open their handcuffs. A plastic key undetectable by metal detectors….