A new state-of-the-art camera can detect lies by monitoring tiny changes of facial expressions, U.K. scientists reveal this week.

Developed by researchers at Bradford University, this lie-detecting system comprises a video camera with a thermal imaging sensor that measures flushing and swelling blood vessels around the eyes. The device also picks up telltale signs such as lip-biting, nose-wrinkling, swallowing and blinking.

"Our aim was to develop a purely non-invasive lie detector technology. We assumed this could be used in a covert situation, where the person we are monitoring potentially knows nothing about it," lead researcher Professor Hassan Ugail said.

A study with 40 volunteers testing the new equipment saw an approximate 70 per cent accuracy rate. Ugail hopes this will rise to a rate of 90 per cent, acknowledging that such tests can never be 100 per cent accurate. Scientists are hoping this new technology will be utilized at a U.K. airport.

 
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