This is a truly random walk over output from our Photonic Instrument. It is live as the instrument is constantly on-line (apart from those few times when it's being greased). If you refresh your browser, you'll see the walk update. Please be aware that there is a 5 second throttle in place so that the instrument is not over stressed by bots, hackers or the NSA.
This is a random walk of 20,000 steps over random numbers extracted from the instrument. The instrument produces approximately 85,000 bits of entropy per refresh, which is then distilled down to 5,000 bytes of uniformly distributed random numbers. 20,000 steps from 5,000? Remember that each random byte consists of 4 independent pairs of bits, and only a single pair of bits is required for an individual step.