Care for a game of truth or dare? Want to get the truth? With the USB Polygraph you get a real polygraph machine! Use this lie detector to determine the truth (80%-99% accuracy). Great for parties, truth or dare, and more! Who took my pastrami sandwich? Do you have a crush on Brett? No training, no learning curve. Just plug it into your PC's USB port, strap the sensors to your test subject, and run the easy and fun software. Enter your questions and get the answers. The computer will analyze the responses and will report to you the truth. The software is the polygraph expert. Got Windows 8/7/Vista? Download the free upgrade from USBPolygraph.com in the downloads section.