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The American Survival Research Foundation offered a reward of $1,000 for cracking one of Thouless’s two codes within three years of his death. It was not claimed. Shutterstock.com

Cryptology from the crypt: how I cracked a 70-year-old coded message from beyond the grave

Computer capabilities have boosted our decryption technology to great heights. How will the future compare to a past, one in which codes were thought to be a means of communicating after death?

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