Physics team uses pixel sensitivity of smartphone as a random generator for encryption

(Phys.org) —A team of physicists led by Bruno Sanguinetti of the University of Geneva has found a way to use an ordinary smartphone as a true random number generator to provide secure communications. In their paper uploaded to the arXiv preprint server (soon to be published in Physical Review X), the team describes how they used the photon sensitivity of a Nokia N9 smartphone camera lens to generate truly random numbers that could be used in encryption schemes.

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