True Random Number Generator
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True random number generators use physical systems that obey probabilistic laws. This is in sharp contrast with pseudo-random number generators that use deterministic physical systems, which seems probabilistic due to the lack of knowledge on the system details. Quantum mechanics is the only physical theory that obeys probabilistic laws and cannot be reduced or described in terms of some more fundamental deterministic theory. The TrueRNG portal exploits a quantum optics process to generate a stream of truly random bits. Nevertheless, it is important to warn users that randomness violations may be caused by imperfect implementations of quantum systems. There are randomness tests that help to certify and to increase the confidence in the results. Some of these tests can be checked here .