Selected facts:
Figures updated in 2016 claim that the Thai government spent 1.4 billion baht on the purchase of 1,358 devices between 2006 and 2010.
Even after the efficacy of the device was debunked by Thai and foreign scientists, Prime Minister Prayut Chan-o-cha, then army chief, declared, "I affirm that the device is still effective."
The GT200 case was a unique scandal because the devices...seemed to fool only the people closely connected to their sale and purchase."
In total, 14 government agencies were duped into buying GT200s: the Central Institute of Forensic Science (!); Royal Thai Army Ordnance Department; Customs Department; Provincial Administration Department; Royal Thai Aide-De-Camp Department; Provincial Police of Sing Buri and Chai Nat; Songkhla Provincial Administration; Royal Thai Navy Security Centre; and five provinces: Phitsanulok, Phetchaburi, Phuket, Yala, and Sukhothai.
The head of Ava Satcom Ltd., the Thai company that sold eight GT200 devices to the Royal Thai Aide-De-Camp Department in 2008, was sentenced in September 2018 to nine years in prison and fined 18,000 baht. The purchase cost the government more than nine million baht. The week previously a court had sentenced him to 10 years in prison for selling GT200 devices to the army for 600 million baht. The judgements will be appealed on the grounds that the GT200s were imported on the orders of the military. The defense claims that army officers approached Ava Satcom with instructions, and specific specifications to buy, import, and resell 535 GT200s to the army.The military men involved have never been censured for their obvious gullibility and possible wrongdoing.
https://en.wikipedia.org/wiki/GT200