According to Wilson, the can’s built-in sensors are able to tell if people are “keeping it real” by measuring two key bio-response metrics: pulse rate, and galvanic skin response—changes in sweat gland activity, reflective of the intensity of our emotional state or emotional arousal.
Like a lie detector test, it works by first establishing a baseline. “To maintain consistency, we only ask yes or no questions and compare the before and after metrics,” said Wilson. “When a user’s heart rate and galvanic skin response is maintained, it can be assumed that the truth is being told. When that baseline increases we can assume there is a falsehood.”