This new weapons sensor could be the next breakthrough in security

Most people won't even know they're being scanned

A new weapons sensor.

Keeping weapons out of Las Vegas casinos is a top priority for resort operators, said Robbie Gonzalez in Wired. The Westgate Las Vegas Resort & Casino is testing a "discreet weapon-sensing device" that scans guests for guns, knives, and bombs "without forcing them to walk through metal detectors." Patscan Cognitive Microwave Radar units combine short-range radar with machine-learning algorithms to scan guests, and are small enough to hide in walls, doorways, and elevator banks.

Two antennae emit electromagnetic radiation to about 6 feet and run results against a database of "known radar signatures" of guns, knives, and pressure-cooker bombs, so casino security can "distinguish weapons from benign objects." The scanners are being tested before their planned placement throughout the hotel this year. "Most people will never realize they are there."

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