New approach to generating truly random numbers

The German team has now developed a true random number generator that uses an extra layer of randomness by making a computer memory element, a flip-flop, twitch randomly between its two states 1 or 0. Immediately prior to the switch, the flip-flop is in a metastable state where its behaviour cannot be predicted. At the end of the metastable state, the contents of the memory are purely random.