An innovative technology developed by researchers at Cornell University offers a solution to the problem of fake videos. It uses an invisible watermark that is embedded directly in the light of the lighting fixtures. The method, called "light noise encoding", was presented at the SIGGRAPH 2025 conference in Vancouver.
How does the technology work?
The technology uses LED lamps that change their brightness in a specific way, invisible to the human eye. This "noise" is captured by the cameras that record the video. Later, special algorithms analyze this code and compare it with a database to confirm the authenticity of the recording.
The main advantage of this method is that it is extremely difficult to forge. Even after the video has been compressed, edited, or generated using artificial intelligence, the signal hidden in the light remains strong enough to verify its authenticity.
Application and future plans
Currently, the technology is limited to indoor spaces where lighting can be controlled. Experts believe it is ideal for protecting important broadcasts, corporate meetings or negotiations.
In the future, developers hope to integrate the technology into smartphones and Smart lighting systems, which will expand its application and help combat disinformation and fake videos.