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Ghost Font: An Ingenious Optical Illusion Concealed from AI

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Written by John Oliver

2026-07-15

A clever new way to protect content

In the digital age, where AI is increasingly used to harvest content, creators face new challenges in protecting their work. Enter Ghost Font, a novel approach that melds typography with optical illusions to conceal messages from artificial intelligence.

The mechanics behind Ghost Font

Ghost Font cleverly hides text within a sea of moving dots in video animations. These dots form a pattern that the human brain can decipher, thanks to its ability to perceive motion. As the dots drift in opposite directions, we perceive letters. However, when frozen on a single frame, the text vanishes, disrupting the illusion and baffling AI, which typically analyzes static frames individually.

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Ghost Font even embeds a decoy message, “written in Ghost Font,” to mislead AI systems further. While AI models can struggle to interpret this optical play, they often require assistance or specific guidance to uncover the hidden messages.

A viral sensation

After its creator, Eric Lu, shared Ghost Font on a social platform, it quickly garnered nearly 18 million views in three days. Lu, who is working on an AI font generation model called Mixfont, was inspired by concerns over unauthorized content harvesting. He demonstrated Ghost Font’s ability to evade detection by AI models such as Anthropic’s Claude Fable and OpenAI’s GPT-5.6 Sol Ultra.

Close-up of Ghost Font showcasing intricate letter design against plain background.
(Image credit: Future)

Try Ghost Font yourself

To see Ghost Font in action, visit the Ghost Font website and type a phrase to generate the animation. You can attempt to see if an AI model can decipher the video by asking, “What does this animation say?” Thus far, AI requires explanation or assistance to grasp the hidden message.

Though Ghost Font remains experimental, it highlights the importance of innovative solutions in the evolving landscape of digital security. While AI might eventually surmount this optical challenge, Ghost Font offers a glimpse into creative protection strategies.

For the curious, experimentation at the Ghost Font website provides firsthand insight into Eric Lu’s ingenious creation.

As Ghost Font blends art and technology, Elena Limkina’s surreal illustrations offer another example of intricate artistic techniques worth exploring.

Source: creativebloq.com