The tool is called Coyote. Voss wrote in an email that the company’s lack of specificity amounted to “putting spin on the ball” rather than outright lying. Until recently, every lie-detecting tool was based on a psychological thesis of deception: Liars sweat because they’re anxious; they avoid detail because they don’t have real memories to draw on. Later, while building Coyote, Hyde added in speeches by politicians and celebrities. A desktop app called LiarLiar purportedly uses AI to analyze facial movements, blood flow, and voice intonation in order to detect deception.