Facial scanner against lies

The liar is one who intends to deceive another person, knowing the truth and has the choice to say it or not. exist selfish lies Y pious .

The selfish lies

  1. They allow to give a good image of oneself or to protect the image to the eyes of the other or of the others: we exaggerate our qualities a bit and we are careful to mask our defects
  2. They help to obtain a benefit, a job, sell to someone anything they do not really need
  3. They avoid punishment (for a child); a conflict or a break (for an adult)


The pious lies

We lie so as not to provoke someone's sorrow or please him. It avoids, for example, telling what you think of a person, his hairstyle or his clothing.

Some psychologists call these defensive lies , because the goal, in the end, is to preserve our relationship with the other person. He lies for fear to be deprived of the other's love. People who tend to say everything they think are very sure of themselves and are not afraid to lose that love.

Lies discoverer

British scientists have developed a system that lets you know if someone is telling the truth thanks to a sophisticatedfacial scanner . And it is that a simple gesture of our physiognomy reveals everything we want or not say. The face shows a lot of emotions in the form of changes in the expression or the Blood flow , and it is something that escapes our control when we are lying.

The lie detector , developed by researchers from the University of Bradford and Aberystwyth , consists of a video camera and a high definition thermal sensor that read and interpret the changes of temperature , of blood pressure , in the muscles of the face, the movement of eyes , if the Pupils , if one bites or gathers lips , wrinkles the nose, breathe deep, swallow, which may indicate a lie .

The machine was successful in two thirds of the cases analyzed, reported Hassan Ugail , in charge of leading the investigation.

According to the researcher, in a real situation of high stress we can be more successful, because he believes that the system will be able to detect 90% of those who lie, a percentage similar to that obtained by thepolygraph , the instrument most used so far as a lie detector, dating from 1921.

British scientists defend that their invention is less invasive (you do not have to connect cables to the suspect) and their results are obtained in real time.

Video Medicine: China: facial recognition and state control | The Economist (February 2023).