Abstract: A system for generating random numbers comprising a first particle source configured to emit sequentially a plurality of particles towards a first screen comprising one or more slits configured to produce a first diffraction pattern at a first detector by random scattering of the particles; wherein the first detector comprises a plurality of regions each configured to trigger the generation of an output signal upon stimulation of the region by a particle, such that the output signals generated by the first detector are indicative of the positions of the plurality of particles in the first diffraction pattern; and a processor configured to process the output signals from the plurality of regions to thereby generate at least one random number based on the random scattering of the particles.