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Duven Polygraph Services offers polygraph consultations in South Dakota and North Dakota.
Polygraph Consultations – North Dakota, South Dakota


DPS can consult on polygraph exam results with an individual, company, attorney, or law enforcement. 

It can be valuable to get a second opinion if you are unsure of the results. Not only can this save you from a wrongful conviction in criminal cases involving the law, but it can save time and money in the long run.


Eric Duven has served in law enforcement for over 25 years. He has a wealth of experience and education on not only polygraph examinations and their results but how they can be used to best show the truth. 

Duven can speak at law enforcement, government, and legal conferences to discuss the uses of polygraph testing. He is also happy to speak to a variety of smaller groups or come into a law office, government agency, or any variety of group.

In addition to speaking engagements, Duven is also available to teach law enforcement, government agencies, and more on how to read polygraph tests, how to use them to further a case, and more.

DPS Travels! Contact us to schedule polygraph services anywhere in South Dakota or North Dakota!

Government or law enforcement agency pricing is contract-based.​

For private polygraphs or other, please inquire directly.

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Eric Duven completed PCSOT at PEAK Credibility Assessment Training Center. Polygraph North Dakota South Dakota
Eric Duven graduated from Backster School of Lie Detection. Polygraph North Dakota South Dakota
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