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How good is your concealment?


Technology companies are creating artificial-intelligence surveillance systems that can scan for weapons or explosives without recording people or analyzing their faces, a boon for businesses concerned about data privacy.

Firms including Liberty Defense Technologies Inc., based near Atlanta, and Evolv Technology Inc. of Waltham, Mass., sell systems that bounce energy waves off peoples’ clothing and bags, generating shapes and contours that artificial intelligence, based on machine learning from thousands of examples, can interpret as hidden guns, knives or bombs.

These new, noninvasive systems are being tested and used at shopping centers, office buildings, corporate campuses, stadiums and hospitals.

AI Surveillance Systems Can Work Without Facial Recognition

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