 when we're lying, give us away when we're lying, I should say. Scientists say it takes more middle effort to lie. That effort and energy causes our pupils to dilate. Most people, you really can't detect it, but a company created an eye detect, which can. It can catch someone in a lie by looking at their eyes. It's like a polygraph that tracks your answers to the questions. When we're asking questions of an individual, we can determine if they're being deceptive or truthful based on how much pupil dilation is occurring immediately after they answer the question. So if your pupils get larger, that means you're lying. Companies, home, the company, homes, the lie detector could one day assist police with keeping an eye on crime.