Reconfigurable metasurface with properties that are modulated by chaotic patterns effectively/ energy-efficiently secures communications

https://techxplore.com/news/2025-07-chaos-modulated-metasurface-physical-layer.html

"no encryption keys or adding protection after messages created... integrates into existing wireless systems without modifying transmitter, receiver, communication protocol... chip controlled metasurface mirror for radio signals using chaos-based logic generating unique pattern each time signal sent, part of surface sends signal clearly in direction of intended receiver, rest scrambled... chaos better than random number generators... even if moving, reduced size... smart sensors, drones, wearables"

Related: Digital-coded metasurfaces: A comprehensive review of the new paradigm in wireless communication
https://www.eurekalert.org/news-releases/1093619