Take the 2-minute tour ×  I have a question about random number
generators.  I have read from a real random number generator,
based on a webcam ("randcam"). My problem is, that I do not
really understand how the generation of the random numbers
works. Has anyone heard of this principle before and can give
some hints how it could be implemented? And how randomly is this
method, I've read it should give real random numbers, but is
this true? I've found an implementation in C++, but I did not
really understand how this implementation works, I am not that
familiar with C++.  share|improve this question I've never heard
of this randcam thing, and wouldn't recommend using it. Instead,
I recommend using a standard random-number source, such as
/dev/urandom, CryptGenRandom(), or similar (depending upon what
platform your code is running on). –  D.W. Dec 1 '12 at 20:06
@D.W. Sensor noise is a nice source of entropy. Obviously you
still need to feed it into a standard PRNG. –  CodesInChaos Dec
2 '12 at 8:32 @CodesInCha