AI Someone created a ‘Ghost Font’ that humans can read but AI can’t — I had to try it for myself News By Amanda Caswell Published 13 July 2026 Ghost Font hides messages inside moving dots that humans can read almost instantly and it exposes one of AI’s biggest blind spots When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works . (Image credit: Future) Copy link Facebook X Reddit Email Share this article 0 Join the conversation Follow us Add us as a preferred source on Google Newsletter Subscribe to our newsletter AI is getting remarkably good at reading documents , recognizing messy handwriting and even understanding blurry screenshots . But now, something called Ghost Font is exposing a weakness most of us never even knew about until now. Ghost Font is essentially an optical illusion that hides letters inside hundreds of moving dots, relying on the human brain’s ability to detect motion rather than visible shapes. Naturally, I had to find out what makes it work — and why it appears to confuse today’s AI models. What is Ghost Font? Ghost Font is an experimental typography project created by designer Eric Lu that explores the differences between human and machine vision. Latest Videos From Watch full video here: Rather than drawing letters with solid lines, Ghost Font fills the screen with thousands of tiny dots. The dots inside the hidden letters move in one direction while the surrounding dots drift in another. Your brain instinctively groups the moving pixels together, allowing the hidden word to emerge even though there are no visible outlines. But when the animation is paused, the illusion disappears. All that’s left is what looks like random visual noise. You may like ChatGPT wouldn’t stop talking about ‘goblins’ — here’s what’s going on Google’s AI can’t spell its own name — and that’s a terrifying sign for the future of search The biggest risk of using ChatGPT every day isn’t what it learns — it’s what you stop doing The project can even include decoy text designed to mislead AI systems , causing some models to confidently identify the wrong message while humans continue to see the intended one. How to try Ghost Font yourself A post shared by Amanda Caswell (@amandacaswell_ai) A photo posted by on Curious whether your favorite AI chatbot can crack it? You can run the same experiment in just a few minutes. Visit the Ghost Font website . Tom’s Guide: Direct to Your Inbox Get instant access to breaking news, the hottest reviews, great deals and helpful tips. Contact me with news and offers from other Future brands Receive email from us on behalf of our trusted partners or sponsors By submitting your information you agree to the Terms & Conditions and Privacy Policy and are aged 16 or over. Enter a short phrase, such as “HELLO HUMAN” or “TOM’S GUIDE.” Generate the animation and make sure you can read the hidden message yourself. Download the animation or record your screen. Upload it to ChatGPT, Claude or Gemini and simply ask, “What does this animation say?” Compare the responses. Does the AI identify the hidden message, read the decoy text or confidently guess something else? What to read next A 13-word Reddit comment can trick AI search into recommending scams, researchers find ChatGPT just launched Images 2.0, and it finally fixes warped text I use AI all day for work — and it’s triggering a bizarre sleep phenomenon For an extra challenge, try again with a more specific prompt, such as: “Analyze the motion in this animation over time to determine the hidden text.” See whether giving the AI more context changes the result. Why AI struggles (Image credit: Future) Ghost Font exploits a fundamental difference between how humans and today’s AI vision models interpret visual information. Humans are remarkably good at recognizing motion patterns because our visual system naturally combines tiny changes over time into meaningful objects, allowing us to spot the hidden letters almost
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