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importantSYS.SOURCE: Wikipedia• 2026-07-28T10:30:02Z

Lewis Carroll's Nyctography: A Substitution Cipher with Dots and Strokes

#substitution cipher#cryptography#lewis carroll#dot notation#cipher device

Nyctography is a substitution cipher invented by Lewis Carroll in 1891 using a grid-based system of dots and strokes for writing in darkness. It features a unique alphabet with symbols derived from geometric patterns and special markers for punctuation and numerical data.

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