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

http://phys.org/news/2014-09-physics-team-pixel-sensitivity-smartphone.html

(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), ..…