Interesting project. I'm looking forward to see the results. This reminds me some of the mental algorithms I was thinking about: How do you generate a random nu

Interesting project. I'm looking forward to see the results. This reminds me some of the mental algorithms I was thinking about: How do you generate a random number without electronic devices? How do you generate a random permutation without electronic devices? How do you generate a hash without electronic devices? How do you do the above most efficiently? How about without any pen, pencil or paper? It will be cool if you can master mental cryptography.