Pentagon to Use AI to Improve Lie Detection Technology

The US Defense Department plans to improve its polygraph technology with artificial intelligence, according to documents declassified in July 2026. This move has sparked debate among experts, who question the effectiveness of AI in detecting lies. Polygraphs, also known as lie detectors, have been used for decades to measure physiological changes in individuals, such as heart rate and skin conductance. However, their reliability has been disputed, with some experts arguing that they can be influenced by various factors, including anxiety and stress. The Pentagon’s plan to integrate AI into its polygraph technology aims to address these limitations and improve the accuracy of lie detection. However, experts warn that AI is not a silver bullet and that more research is needed to understand its potential and limitations in this context.