EyeDetect is designed to detect lies and deception in individuals. A guilty person that responds honestly to questions about an infraction or crime will not exhibit the same cognitive changes that a guilty person exhibits who attempts to conceal their deception. If a person responds truthfully about using drugs during an EyeDetect test, for example, they may or may not exhibit cognitive change. Theoretically, you can’t predict in advance if the person will fail or pass in this scenario.