Computer lie detector may undergo secrets trial at British airport

A NEW lie-detection system could be used in airports without passengers’ knowledge.

Researchers from the University of Bradford have created a computer program that detects subtle changes in facial expressions and changes in blood flow around the eyes to detect lies.

They are planning to use the program in research trials at an airport, but it is not yet clear whether passengers will know they are being monitored.

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The program is based on preliminary research on 40 people who read a story and were told to either tell the truth or lie when questioned about it.

Participants were asked ten questions in which they told the truth to establish a baseline for their facial expressions and the blood flow patterns around their eyes, using a standard camera and a thermal camera. Then they were interrogated on ten questions when they had to lie.