Would not generating random numbers using video sources be suseptable to the same 'external' influences as generating random numbers from radio static? External RF fields could skew the 'randomness' of the data. As another thought, has anyone done any work on RNGs involving chaotic processes such as fluid dynamics and turbulent flow? I suspect that pressure, or other parameter variences, in turbulent flow could yield good random numbers. As a bonus, these parameters are easily measurable without special, exotic, equipment and should be inexpensive Regards, Tim Philp =================================== For PGP Public Key, Send E-mail to: pgp-public-keys@swissnet.ai.mit.edu In Subject line type: GET PHILP ===================================