Not exactly your high tech gadget, but cryptography buffs and the Da Vinci Code fans might want to check out the Cryptex. Cryptex.org creates customized Cryptex™ Security Boxes to user specifications.
A cryptex is a cylinder that encloses a scroll with a message inside. The tube has external rings that contain characters (letters or symbols) and rotate to act as a combination lock. Once the rings have been configured with the correct combination, an end of the cylinder opens up to reveal the scroll.
Not very secure by today’s standards, but still a cool gadget isn’t it?
Watch the trailer for the Da Vinci Code movie set to be released this May to catch a glimpse of the cryptex in action.