👻 Ghost Font Decoder — I built a tool that reads the anti-AI font that tricks GPT-5 and Claude 4

[roohan-514]

Ghost Font (mixfont.com/ghost-font) is a new typeface designed to be unreadable by AI — it hides text as moving dots that are invisible in any single frame, even to multimodal models.
But moving dots leave trails. This decoder tracks each dot across every frame, counts light→dark transitions per pixel, and rebuilds the letter paths. The result: a clear image of the hidden message.
How it works:

1. Detect dark moving pixels in every frame
2. Count transitions per pixel (moving dots flicker; static decoys don't)
3. Keep the top 1% most-active pixels — these trace the letters
4. Dilate into readable strokes
5. EasyOCR attempts to read it (best-effort — Ghost Font is designed to defeat AI)
   Stack: Python, OpenCV, EasyOCR, Tkinter GUI, CLI included.
   3 detection methods: transition-tracking (best), dark-count, frame-diff
   Why it's interesting: This sits at the boundary of the AI-vs-human cat-and-mouse game. Ghost Font tries to create content only humans can read. This decoder proves that with enough frames and the right analysis, even "AI-proof" content can be cracked.
   Repo: https://github.com/roohan-514/ghost-decoder
   Try it with any Ghost Font video from mixfont.com/ghost-font — type a message, download, drop into the decoder.