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I decoded Ghost Font with Claude, and it wrote the decoder itself #
Last week I heard about Ghost Font.
The headlines call it “a font AI can’t read.”
I downloaded one clip, handed it to Claude Code, and asked it to pull out the hidden text.
Two minutes later it returned three words, RECOVER THIS MESSAGE, rendered by a decoder it had written from scratch.
Freeze a frame and the message disappears #
Ghost Font is a random-dot kinematogram. Each letter is a cloud of dots painted the same colour as the background, so in any single frame the screen is a uniform field of noise.
Nothing to read.
The letters live only in motion.
The dots that make up a glyph drift together, while every other dot moves at random, and your visual system (tuned to spot coherent motion long before it ever learned to read) assembles the moving cluster into words the instant the clip plays.