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European airports will soon use lie detector tests. Lie detector machines will use artificial intelligence. They are part of an EU project called i-BorderControl. The machines will be tested in Hungary, Greece and Latvia. Travellers from outside the EU will take the test. They will look into a webcam and answer questions. A computer-generated officer will ask the questions. It will look like the race of the traveller and use the traveller's language.
The EU said the virtual border guard will scan passengers' faces to find out if the passenger is lying. A human will take over if the lie-detector thinks a passenger is lying. Low-risk travellers will get questions on basic information; higher-risk passengers will get more detailed questions. A psychology expert said the system might not work. He said people change their behaviour when a lie detector asks them questions.
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