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Institutional belief · Security technology and substance detection

Remote “molecular” detectors for explosives and drugs

Hand-held passive-antenna devices such as the GT200 and ADE 651 were treated as able to remotely identify hidden explosives, drugs, weapons, or other substances through claimed molecular or electrostatic mechanisms, reliably enough to guide searches, checkpoints, arrests, and other security decisions.

2 episodes

Current understanding

Current understanding

These devices had no validated mechanism capable of remotely identifying the claimed substances. Controlled testing of the GT200 found performance compatible with chance, while a British criminal court found the ADE devices useless and their explosive-detection capability no better than random chance. Reliable explosive or drug detection requires validated physical, chemical, biological, canine, or imaging methods rather than the movement of an unpowered passive antenna.

Consequences and human impact

Consequences and human impact

The institutional failure was not merely wasteful procurement. Unvalidated detector indications were converted into operational security signals: they influenced searches, home entries, detentions, checkpoint screening, and judgments about whether people or vehicles were dangerous, while creating confidence in devices that controlled testing and later criminal proceedings showed did not work as claimed.

How the consequences followed

Procurement totals and flawed detector results do not provide a defensible count of wrongful arrests, injuries, or deaths. In sentencing the ADE 651 seller, the English court explicitly said that a specific death or injury could not be proved to have resulted from a device, while finding that the false sense of security had in all probability materially contributed to death and injury.

Federal operation and institutional defense of the GT200 remained active parliamentary issues through 2014. That evidence does not establish that every GT200 disappeared from every Mexican state or municipal agency on a single date.

742

GT200 units acquired by Mexico's SEDENA according to congressional records

17 of 20

Failed GT200 attempts in a double-blind test using certified operators

7,000+

ADE devices sold to the Iraqi government and other international agencies by James McCormick's company

Quantitative figures are highlighted only when the cited evidence supports them. The scale of a related catastrophe is not automatically treated as a death toll caused solely by this belief.

Institutional episode

Iraq

2007–2016Policy basis

Iraq's Ministry of Interior began procuring ADE-family bomb detectors in 2007 for its counter-explosives work, and the devices became a familiar part of police and security checkpoints. In 2013 the Central Criminal Court in London found seller James McCormick guilty of fraud; the sentencing judge described the ADE devices as useless, with explosive-detection capability no better than random chance, and found that the false sense of security had in all probability materially contributed to death and injury, while cautioning that no specific casualty could be attributed to a device. The detectors nevertheless remained in Iraqi police use until July 2016, when Prime Minister Haider al-Abadi ordered security services to stop using them.

Institutions

  • Ministry of Interior of Iraq
  • General Directorate for Combating Explosives, Ministry of Interior
  • Iraqi Police Service

Documented consequences

  • ADE devices were used to screen vehicles and people at security checkpoints
  • Security personnel trusted detector indications when assessing explosive risk
  • Large public expenditures were committed to devices later found to be useless
  • Operational use continued for years after serious doubts, investigations, and foreign restrictions had emerged
  • The false sense of security created a continuing danger at high-risk checkpoints

Institutional machinery

Ministry of Interior procurement began with contract 2/2007 after a request tied to the directorate responsible for combating explosives. ADE-family devices were subsequently used at Iraqi checkpoints and remained in police use despite international warnings, corruption investigations, and the British seller's 2013 fraud conviction. Prime Minister Haider al-Abadi finally ordered security services to stop using the fake detectors in July 2016.

Sources and what they establish

Institutional episode

Mexico

2008–at least 2014Policy basis

Beginning in 2008, Mexican federal agencies acquired GT200 “molecular detectors” for drugs, explosives, weapons, and related security work; congressional records attribute 742 units to SEDENA, 102 to SEMAR, 54 to PEMEX, and seven to the PGR. SEDENA press releases document operational use, while the CNDH reported that armed forces used GT200 indications in organized-crime investigations and sometimes entered homes on that basis. A double-blind test with certified operators later failed in 17 of 20 attempts, a result compatible with chance. Judicial, scientific, human-rights, and parliamentary challenges accumulated through 2014, when federal purchase and operation of the devices remained the subject of congressional investigation and criticism.

Institutions

  • Secretaría de la Defensa Nacional (SEDENA)
  • Secretaría de Marina (SEMAR)
  • Procuraduría General de la República (PGR)
  • Petróleos Mexicanos (PEMEX)

Documented consequences

  • GT200 indications were used during military and organized-crime operations
  • Detector signals contributed to searches, home entries, detentions, and criminal proceedings
  • Federal agencies spent public funds on more than a thousand devices across the Mexican government
  • Courts and human-rights bodies later confronted the scientific and constitutional consequences of relying on the device

Institutional machinery

Mexico's federal government purchased GT200 devices for military, security, prosecutorial, and infrastructure use. SEDENA publicly described operational deployments, while the National Human Rights Commission documented armed-forces reliance on detector indications during organized-crime operations and home entries. By 2011–2014 scientists, courts, the CNDH, and legislators were challenging the device's validity, yet congressional records still described federal operation and the absence of a uniform executive suspension.

Sources and what they establish

Last reviewed: 23/08/2026