It is now possible to spy on a conversation from a distance without microphone or sound, here is how

Imagine being able to listen to a conversation through a window. In addition, without microphone, wireless and noise. Moreover, In China, an amazing innovation makes this possible, and it works with a simple light beam. Therefore, This discreet system may well change our relationship to sound … Furthermore, and to privacy.

In recent months, Chinese technological projects are surprising as much as they worry. Moreover, Researchers have controlled remote bees thanks to miniature brain fleas. Furthermore, Others have created a spy drone that imitates the appearance of it now possible spy conversation a mosquito to sneak everywhere without being detected. In this context of racing for miniaturization. silent espionage, A new optical system capable of “listening” with light has just been developed.

Developed by the Beijing Institute of Technology. in China, this device is not based on a membrane or a classic audio sensor. It works thanks to a unique pixel imaging technique. capable of detecting the micro-vibrations caused by sound on a surface like paper or a plant. The light variations are then transformed into an audio signal, all with inexpensive equipment and without physical contact. This system could operate through a window or in an enclosed space, where traditional microphones are unusable.

This visual microphone captures your words by observing a simple object … without you knowing it – It now possible spy conversation

The principle is based on a light projector which sends structured patterns on an object. while a single sensor measures reflected light. Landy vibrations modify this reflection and allow an algorithm to reconstruct the original sound. During the tests, the researchers managed to capture figures in Chinese and English, as well as a classical music extract. Even a simple sheet of paper was enough to transmit the sound vibrations precisely.

The system does not require any complex equipment. It works with natural lighting, generates little data (around 4 MB/s), and remains precise under normal conditions. This technology could be used to monitor closed spaces, but also to measure heart rate or human movements. It opens it now possible spy conversation the way to new discreet, portable and potentially connected uses. In the long term, this type of sensor could be integrated into everyday devices without notice.