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"IN “SKYFALL”, the latest James Bond movie, 007 is given a gun that only he can fire. It works by recognising his palm print, rendering it impotent when it falls into a baddy’s hands. Like many of Q’s more fanciful inventions, the fiction is easier to conjure up than the fact. But there is a real-life biometric system that would have served Bond just as well: cardiac-rhythm recognition." http://www.economist.com/blogs/babbage/2013/05/biometrics We're doing that, and more. Redefining identity in a practical and scalable way: identity as a service through wearable biometrics.