Oh my goodness, ever felt stressed at airports, well it’s getting worse! On Thursday, the Homeland Security Department (U.S.) showed off an early version of physiological screeners that could spot terrorists.

A scene from the airport of the future: A man’s pulse races as he walks through a checkpoint. His quickened heart rate and heavier breathing set off an alarm. A machine senses his skin temperature jumping. Screeners move in to question him.
Signs of a terrorist? Or simply a passenger nervous about a cross-country flight?

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