 middle Tennessee's only prime time news. Fox 17 news at nine. An alert tonight about a new way to catch criminals or simply tell if a loved one is being truthful. Scary stuff here as Gatti Hart shows us one company believes it can tell if somebody is lying just by looking them in the eye. A new form of lie detection claims it can see the truth. When a human being is being deceptive that there are these micro dilations of the pupils. It's the extra mental energy that it takes to be deceptive. Eye detect has been in the work since 2003 only taking 30 minutes to complete this new testing technology could be faster and more efficient than the old school polygraph. Its creators argue that eye detect may have the edge because it isn't influenced by any human bias. So by removing the human element we believe we can make the assessment of credibility far more forensic in nature. Ron Slay is a security consultant who administers polygraph exams. He says in his 40 years of experience he's seen all forms of deception and he thinks it takes more than a computer system and answering a few questions to detect a lie. You can't automate the human mind. We wanted to put both methods to the test so I sat down to see which machine would best read my lie. I'm in the hot seat. At first we put the standard polygraph to the test. Slay asked me two questions that were simple enough to answer honestly. No, I want everybody to watch the blue line. Is today Tuesday? Yes. But before he even finished asking me the third question. At work, did you ever look at a boss with sincere eyes when you knew the reaction is already over but took off and it's barely coming back again? Then we tested eye detect. Harris had me write down a number between two and eight and then hide it. I chose the number seven. The examiner told me to lie about my number to the machine but to tell the truth on all the other questions as the eye detect system calibrated my eyes and then monitored my pupil dilation. I did not choose the number seven. Eight was not the number that I picked. Look at the spike on the seven. Safe to say that I got caught lying or preparing to lie on both tests but Slay says it can sometimes be harder to catch the people you wanna catch because they have their own truths. They're not really answering your questions at all. They're answering what they perceive to be your question. Slay and Harris agree that both eye detect and polygraphs can get it wrong sometimes. There will be some false positives and false negatives with eye detect as it exists today. But Harris says the beauty of computer algorithms is that they get smarter over time. Scary, huh? Eye tech says it hopes that this technology will be a tool to help police actually more than a commercial product. Apple has purchased similar technology but still no word in exactly how the computer giant plans to use that. What do you think about that, Katie? Technology? Interesting, very interesting for sure.