By way of contrast, genuinely random numbers that are only accessible to the intended encoder and decoder allow literally unbreakable encryption of a similar or lesser amount of meaningful data (using a simple exclusive OR operation) in a method known as the one-time pad, which has often insurmountable problems that are barriers to implementing this method correctly.
Kendall and B. Babington Smith produced by a specialized machine in conjunction with a human operator.
Kendall and B. Babington Smith in the late 1930s, and was based upon looking for certain types of probabilistic expectations in a given sequence.
were present; more complicated tests looked for the number of digits between successive 0s and compared the total counts with their expected probabilities.
Published tables still have niche uses, particularly in the performance of experimental music pieces that call for them, such as Vision (1959) and Poem (1960) by La Monte Young.