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Disappearing Cryptography, 3rd Edition by Peter Wayner

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Chapter 19. Synchronization

19.1. Stealing Baseball's Signs

To: Newly Signed Recruits

From: Third-Base Coach

Here are the signs for tonight's game. As usual, I will string together a sequence of bogus signs in front of the two trigger signals. After the two trigger signals, alpha and beta follow in immediate sequence. I will deliver the one sign that isn't fake. Pay attention to that one. Then I'll add in another three to seven fake signals to close out the set. Remember: Ignore all signs that don't follow the alpha and beta, sign in sequence. If you see another sign between the alpha and beta, ignore them all. If you see the beta before the alpha, ignore it. Use the alpha and beta to synchronize yourself on the sign that matters.

Sign

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