Programming Lewis Carroll's *Memoria Technica*

2024-12-27

This article explores Lewis Carroll's *Memoria Technica*, a cipher he devised to aid in remembering numbers. The cipher maps consonants to digits, ignoring vowels and punctuation. The article describes the cipher's mechanics, presents online tools for encoding and decoding, and discusses its potential use in steganography. The authors detail their TypeScript implementation, highlighting optimizations for efficiency. Examples illustrate encoding and decoding, and the article analyzes the cipher's strengths and weaknesses as a steganographic technique, including a potential vulnerability related to letter and digit frequency discrepancies.

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Development Steganography