Quite a few readers are sending in stories about ThruVision's products, slated to be demonstrated in Britain next week, that are claimed to use Terahertz radiation ("T-rays") to detect foreign objects under clothing, without revealing body details, from a distance of 25 meters and while the subject is in motion. T-rays lie on the electromagnetic spectrum between infrared and microwaves, and are the subject of lively research efforts worldwide. ThruVision says it developed its products in cooperation with the European Space Agency.
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