Nyctography Lewis Carroll

Nyctography refers to a writing system that allows you to write in the dark (or, blindly, without seeing).

Lewis Carroll's Nyctographic alphabet is a writing system composed of special square-based characters, which represent the numbers or letters of the alphabet.

To encode a message using Lewis Carroll's nyctographic alphabet, match each letter of the message with its equivalent in the following symbol alphabet:

A		B		C		D		E		F
G		H		I		J		K		L
M		N		O		P		Q		R
S		T		U		V		W		X
Y		Z		0		1		2		3
4		5		6		7		8		9
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To decode a message written using Lewis Carroll's nyctographic alphabet, reverse the encoding process by identifying the symbols in the encrypted message and replacing them with the corresponding letters from the normal alphabet.

Lewis Carroll's Nyctographic alphabet is recognizable thanks to its basic square structure, its lines at the edge of the square and its dots positioned at the corners of the square.

Any references to Charles Lutwidge Dodgson, aka Lewis Carroll, or his writings like Alice in Wonderland are clues.

Any indication or clue relating to nocturnal writing or reading, at night, in the dark (darkness / black), or blind, is noteworthy.

Lewis Carroll, described a special writing instrument he called the nyctograph in September 1891, frustrated with being awake at 2 a.m. (insomnia?) on a winter night and having to light a candle to jot down some happy thoughts.

A version of the book Alice in Wonderland, entirely written with this alphabet is available here (affiliate link)