A Swiss company called 3D has developed a 3D-printed key that is almost impossible to copy. Called the "Stealth Key", it is manufactured from titanium using a 3D printing process called selective laser melting, and takes advantage of the technique's ability to print objects from the inside out to conceal an unusually complex set of teeth behind a pair of flat, narrow ledges, which both guide the key into the lock and keep the teeth hidden from view - and thus hidden from duplication efforts, including smartphone scanning.
A Swiss company called UrbanAlps has developed a 3D-printed key that is almost impossible to copy. Called the "Stealth Key", it is manufactured from titanium using a 3D printing process called selective laser melting, and takes advantage of the technique's ability to print objects from the inside out to conceal an unusually complex set of teeth behind a pair of flat, narrow ledges, which both guide the key into the lock and keep the teeth hidden from view - and thus hidden from duplication efforts, including smartphone scanning.