A Video Screen That Is Also a Camera

Researchers at ETH Zurich have developed a new type of pixel that can both generate and sense light fields, allowing it to function as both a video screen and a camera. This pixel, called a Fourier pixel, manipulates light's intensity, oscillation phases, and polarization to carry information. The team's findings were published in a paper in Nature. The technology brings to mind the telescreen from 1984, which could receive and transmit simultaneously. The development is a step towards achieving similar functionality in real-life technology. The potential implications of such a technology are significant, particularly with regards to surveillance and monitoring.