{"rewrite":{"id":"r_e9870f32716425478ab53092","clusterId":"c_39082bab4e7d854695ed95e4","slug":"decoy-font-lets-humans-read-original-text-while-ai-reads-decoy","model":"deepseek-v4-flash","headline":"Decoy Font Lets Humans Read Original Text While AI Reads Decoy","summary":"Mixfont released Decoy Font, a TTF font that overlays two characters per glyph: one for human readers and one for AI. The decoy characters, drawn with clear outlines, are more visible to image recognition AI, while humans can read the original text when viewed normally. The font is free, based on DejaVu Sans Mono, and is intended for CAPTCHA, private messages, or as a benchmark for AI text recognition. It is not foolproof; advanced AI may still read the original text.","whyItMatters":"Decoy Font provides a simple, practical tool that exploits image recognition AI's tendency to prioritize clear outlines, offering a method to protect text from automatic AI collection.","webCardHtml":"\u003cp\u003eDecoy Font is distributed as a standard TTF file and can be installed on any computer for use like any other font. It is based on the open-source typeface DejaVu Sans Mono. The font works by overlaying two sets of characters in each glyph: the text intended for human reading and a decoy version designed to be read by AI. The decoy characters are drawn with thin but clear outlines, making them prominent when an image recognition AI scans the text. In tests, ChatGPT and Gemini both read the decoy text instead of the original. The font is free for personal, commercial, and client projects, but Mixfont warns it is not a complete solution and may be bypassed by advanced AI with code execution or instructions to look for hidden text.\u003c/p\u003e","blueskyPost":"Mixfont's Decoy Font overlays two characters per glyph so humans see one text while AI reads a different decoy. Free TTF font based on DejaVu Sans Mono. Not foolproof but a clever tool for CAPTCHA or private messages.","twitterPost":"Mixfont's Decoy Font tricks image recognition AI by overlaying decoy characters with clear outlines, while humans read the original text. Free TTF font, based on DejaVu Sans Mono. Tested with ChatGPT and Gemini - both read the decoy. Useful for CAPTCHA or AI benchmarks.","threadsPost":null,"newsletterBlurb":"Mixfont has released Decoy Font, a TTF font that shows different text to humans and image recognition AI. The font overlays two characters per glyph, with decoy text drawn in clear outlines that AI tends to read. It is free for personal and commercial use, though not a complete solution against advanced AI.","attributionJson":"[{\"source\":\"GIGAZINE\",\"url\":\"https://gigazine.net/news/20260717-decoy-font/\",\"title\":\"Decoy Font, a font that humans can read but AI sees as different characters, has appeared.\"}]","lintFlagsJson":null,"lintHits":0,"costUsd":0,"inputTokens":4214,"outputTokens":2560,"status":"published","repairAttempts":0,"nextRepairAt":null,"factsAttemptedAt":1784312385,"createdAt":"2026-07-17T18:08:45.000Z","publishedAt":"2026-07-17T18:12:28.000Z","updatedAt":"2026-07-17T18:08:45.000Z"},"cluster":{"id":"c_39082bab4e7d854695ed95e4","canonicalTitle":"人間には読めるのにAIには別の文字に見えてしまうフォント「Decoy Font」が登場","representativeArticleId":"a_1b02af064ad3c7d85121d249","sourceCount":1,"writtenSourceCount":1,"writeAttempts":0,"isSolo":true,"entitiesJson":"{\"anime_titles\":[],\"manga_titles\":[],\"work_titles\":[],\"studios\":[],\"people\":[],\"type\":\"news\",\"domain\":\"other\",\"is_roundup\":false}","contentType":"news","status":"published","firstSeenAt":"2026-07-17T08:47:00.000Z","lastSeenAt":"2026-07-17T08:47:00.000Z","updatedAt":"2026-07-17T18:12:29.000Z"},"attribution":[{"source":"GIGAZINE","url":"https://gigazine.net/news/20260717-decoy-font/","title":"人間には読めるのにAIには別の文字に見えてしまうフォント「Decoy Font」が登場"}],"entities":{"anime_titles":[],"manga_titles":[],"work_titles":[],"studios":[],"people":[],"type":"news","domain":"other","is_roundup":false},"keyFacts":null}