You've seen the stories about lockpickers using 3D scanning and printing technology to easily defeat a variety of common locks. But all is not lost. Alejandro Ojeda and his team at UrbanAlps have recently unveiled The Stealth Key. It's an additively manufactured security key they say solves the problem of 3D scanned and printed lockpicking. Ojeda and Dr. Felix Reinert say they've developed a range of cylinder locks and keys based on their Stealth Key concept which they say is un-scannable and cannot be copied. They also call their solution “the simplest and most affordable key copy protection available.” You can read the whole story here: http://3dprint.com/68665/urbanalps-stealth-key/
Below is a look at the Stealth Key: