This Voice Stress Analyzer can be used as a Truth Detector.  This gadget uses the Psychological Stress Evaluator (PSE) and the Voice Stress Analyzer (VSA) 'algorithms' to detect stress in a person's voice that usually manifests when the person is not speaking the truth!

It also has a built-in "result indicator" that instantly displays 'truthfulness'!  According to the product description -- "In addition to the continuous measurement of a person's speech pattern, the Truth Detector analyzes its own data to give you cumulative results".

I feel that this is a really cool product.  Honestly! 

Wait... my 'truth detector' is now glowing RED!