Now Noll is working with Cooper on an improved RNG called LavaRnd (which debuted in May at www.lavarnd.org). The new process replaces the lava lamps with a more Zen-like source of entropy: a webcam with its lens cap on. The chaotic thermal "noise" emitted by the webcam is digitized and put through a hash algorithm that churns the number set, stripping unwanted sections of predictability. The result is a cryptographically strong sequence of numbers, ready for use in the real world. And because the new service is open source, patent-free, and license-free, anyone will be able to cheaply build and operate a LavaRnd server and receive the precious commodity free of charge - a random act of kindness.
http://www.wired.com/wired/archive/11.08/random.html
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