Wi-fi could be used to detect weapons and bombs

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Ordinary wi-fi could be used to detect weapons and explosives in public places, according to a study led by the Rutgers University in New Jersey.

Wireless signals can penetrate bags to measure the dimensions of metal objects or estimate the volume of liquids, researchers claim.

Initial tests appeared to show that the system was at least 95% accurate. 

Editor's Comment
Botswana at a critical juncture

While the political shift brings hope for change, it also places immense pressure on the new administration to deliver on its election promises in the face of serious economic challenges.On another level, newly appointed Finance Minister Ndaba Gaolathe’s grim assessment of the country’s finances adds urgency to the moment. The budget deficit, expected to be P8.7 billion, is now anticipated to be even higher due to underperforming diamond...

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