# A Video Screen That Is Also a Camera Researchers from ETH Zurich develop a dual-purpose pixel. - **Source:** [Schneier on Security](https://brifing.si/source/7aee9996-c7c0-47f7-89ec-66a1ed95f8cc) - **Published:** 2026-07-15 - **Original article:** - **On Brifing:** https://brifing.si/s/d8bd0849-d85f-44bf-ab01-8f4b9106e55f ## Dual-Purpose Pixel Technology Researchers at ETH Zurich have developed a new type of pixel that can both generate and sense images. This Fourier pixel enhances information-carrying potential by manipulating light intensity, oscillation phases, and polarization. ## Manipulating Light Fields The Fourier pixel can generate and sense arbitrary light fields. This technology pushes the boundaries of traditional screen and camera systems, opening up new application areas. ## Published in Nature Journal The research team published their findings in the journal Nature. This publication has recognized the technology by the scientific community and laid the groundwork for future developments. ## A Step Closer to 1984 Technology This technology resembles the telescreen concept from George Orwell's 1984. The system, capable of receiving and transmitting both image and sound simultaneously, could revolutionize surveillance technologies. ## Potential Application Areas The Fourier pixel can be used in various fields such as smart homes, security systems, and even medical imaging. This technology can enhance the performance of existing systems and offer new solutions. ## Future Implications This invention could have a significant impact on both consumer electronics and industrial applications. The Fourier pixel is seen as an important step for future technological advancements. ## Sources covering this story - https://www.schneier.com/blog/archives/2026/07/a-video-screen-that-is-also-a-camera.html — --- _Summary written by Brifing from the original reporting. Copyright in the original article belongs to its publisher; read the full piece at the link above._