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CIA @CIA
, 5 tweets, 3 min read Read on Twitter
That Time CIA Used Tiger Droppings as a Covert Tracking Device

bit.ly/2K1ZQmO

#InternationalTigerDay
#GlobalTigerDay
There are only approx 3,900 wild tigers left in the world today. However, during the Vietnam War the Indochinese tiger population was healthy & thriving, providing us a creative way to covertly track movement of North Vietnamese & Viet Cong.

#GlobalTigerDay
During the war, the US needed to monitor opposition location & movement.
CIA scientists invented a seismic intruder detection device: 1.usa.gov/1KyESWn
It could be strategically placed to monitor movements up to 300 meters away.
That’s where tigers came in.
#GlobalTigerDay
Our scientists had to disguise the tech so it would blend into the natural habitat & not be disturbed.

As tigers are native to Vietnam & were found in larger numbers 50 years ago, they were ideal cover.

Detection device was designed to look like tiger droppings.
#GlobalTigerDay
Fueled by tiny power cells & with a built-in antenna, device tracked movement by detecting & counting vibrations from passing people, vehicles, & animals. Data would be relayed via coded pulses

Watch Where You Step: Tiger Scat or CIA Tech?
bit.ly/2K1ZQmO
#GlobalTigerDay
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