TOKYO -- Sohgo Security Services, commonly known as Alsok, will roll out a service this month that can serve as a sentry by listening for drones around government buildings and other important sites.
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Japan's Alsok to warn when drones invade
TOKYO -- Sohgo Security Services, commonly known as Alsok, will roll out a service this month that can serve as a sentry by listening for drones around government buildings and other important sites.
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