Researchers invent 'new type of pixel' that could create displays that double as cameras — and the internet's first thought is 'what could go wrong?'

• A new type of pixel is capable of both controlling and analyzing light
• It's based on the Fourier mathematical tool
• We'll have to wait some time to get this in our gadget screens

Screens that double up as cameras could be packed into future gadgets, as researchers from ETH Zurich in Switzerland have developed a new type of pixel that can analyze and create images simultaneously.

These bidirectional pixels are able to both control and read the intensity, oscillation, phase, and polarization of light, and they're based on the fundamental physics of interfering light waves. The pixels are carefully sculpted at the nanometer level to direct light as it hits the surface and gets scattered.

At the same time as the light is traveling across the pixel and being scattered back out to the viewer, creating the required images and patterns, an analysis of the incoming light can be carried...

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