CheXperiment: Lie detector with Checker Tobi - Who is telling the truth? Become a checker detective yourself - with your own lie detector! With this exciting kit, you and Checker Tobi can build a real functional model that detects the smallest changes in skin conductivity. So you can playfully find out whether someone is getting nervous - perhaps while cheating? The included, easy-to-understand instructions guide you safely through the assembly process. Understand technology, have fun and play detective - all in one set! Highlights