These sensors analyze facial muscles to detect lies.

These sensors study facial muscles to detect lies. A system that already has impressive success rates.

How to know if someone is lying? Sometimes everything is obvious, a person begins to stutter and get confused when he tries to lie during a conversation. Others may try to avoid eye contact. In truth, there are a number of clear signs of a lie, but sometimes these signs are not so easy to detect. This makes exercise especially difficult for some people. Is that to use modern technology.

These sensors study facial muscles to detect lies.

But then how can an investigator, for example, know if a suspect is lying? This is the question that Prof. Dino Levy, Prof. Yael Hanein and a team of researchers from Tel Aviv University, Israel are trying to answer. To do this, they developed a system based on sensors that are placed on the subject’s face and allow analyzing the slightest movements of the facial muscles.

A system that has already achieved impressive success

The concept is this: when a person lies down, they involuntarily activate certain muscles in their face, especially on the cheeks and eyebrows. The sensors in question were designed and calibrated to focus on these muscles, and according to the researchers, their system had a 73% success rate in detecting lies in a subject, simply based on the readings from the sensors.

Of course, putting electrodes on the face is impractical. It is for this reason that the team is now looking to go further by eliminating the need for these electrodes and using artificial intelligence to detect the most subtle muscle contractions thanks to high-definition cameras.

This means that in the more or less near future this technology could be used by the police, airports and, more generally, in all video analysis procedures.