the biggest scam u have ever seen

This.

This is called ADE 651.

It is a fake bomb detector made by a UK based company called ATSC. The company sold this using the premise that this device could detect any explosive, drugs, ivory, and other substances from a long distance.

This device was sold at $60,000 a piece and the Iraqi government, thinking it was legitimate, spent around $78 million to acquire these devices to be used in Baghdad.

This device is responsible for tens of thousands of deaths due to car bombings in the city of Baghdad.

At this point, I don’t know whether to call this a scam or a potential crime against humanity.

The founder of the company had been convicted in April 2013 and sentenced to 10 years in prison.

The story of the fake bomb detectors - BBC News
http://www.bbc.com/news/uk-29459896