(courtesy of Wired) Pictured here is the Steineck Subminiature Wrist-camera, a tiny (if rather obvious) spy device of a kind dating back almost a century. Intriguing for their novelty, fascinating for their ninja-like purpose and obsession-inducing for their beauty, such things live amid the secret mental cache of gadgets I've hankered for since childhood.
Watchismo, one of the most excellent and single-minded of blogs, has a two-part walkthrough of these bizarre creations, which began with a patent filed in 1907 and later sold as the Ticka, a camera disguised as a broken watch. (more)