Random Numbers Certified by Bell’s Theorem, Nature 464

Randomness is a fundamental feature in nature and a valuable resource for applications ranging from cryptography and gambling to numerical simulation of physical and biological systems. Ran-dom numbers, however, are difficult to characterize mathematically [1], and their generation must rely on an unpredictable physical process [2, 3, 4, 5, 6]. Inaccuracies in the theoretical modelling of such processes or failures of the devices, possibly due to adversarial attacks, limit the reliability of random number generators in ways that are difficult to control and detect. Here, inspired b