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Some European airports will soon use lie detector tests. They are part of an EU project called i-BorderControl. Travellers from outside the EU will take the test. Passengers will look into a webcam and answer questions. A virtual border guard will ask the questions. It will use the language the traveller speaks.
The EU said the virtual border guard will scan passengers' faces to find out if a passenger is lying. Low-risk travellers will get questions on basic information; higher-risk passengers will get more detailed questions. An expert said the lie detector might not work. He said people change their behaviour in front of a lie detector.
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