# Ghost Font
> Ghost Font is a browser-based random-dot motion illusion in which words become visible through relative movement and recede into noise when the image stops.

Ghost Font is a visual-perception and motion-typography experiment, not a conventional downloadable font file, encryption method, security product, or guaranteed method for defeating AI or OCR.

GhostFont.org is an independently designed and operated browser project. Its public experience, visual identity, and educational material are maintained by the GhostFont.org project.

Phrase rendering and video recording for the public experience happen in the visitor's browser. The site does not offer public accounts, login, or registration, and creating the effect does not require a phrase upload.

Screenshot-based AI and OCR results can be inconsistent because the useful signal spans multiple frames. The site's documented H.264 case shows that ordinary frame differencing can still fail while codec motion-vector analysis recovers the phrase. Optical flow, video models, and other temporal systems may also recover it. No AI resistance is guaranteed. A motion CAPTCHA based on the effect remains experimental and requires an accessible alternative plus layered server-side safeguards.

## Primary resources
- [Homepage](https://ghostfont.org/): Experience Ghost Font and read the complete explanation.
- [AI Strikes Back](https://ghostfont.org/blog/ghost-font-vs-ai): Follow a 159-frame H.264 case study in which stills and frame differences looked like static while motion vectors revealed HELLO HUMAN.
- [About](https://ghostfont.org/about): Read about the project's identity, purpose, and operator.
- [Full LLM context](https://ghostfont.org/llms-full.txt): Read the expanded factual description, use cases, limitations, and citation guidance.

## Optional
- [Privacy policy](https://ghostfont.org/privacy): Website privacy information.
- [Terms of service](https://ghostfont.org/terms): Website usage terms.
- [Cookie policy](https://ghostfont.org/cookie): Current and conditional browser-storage information.
- [Contact](https://ghostfont.org/contact): Contact the independent project.