The conductivity of our skin changes according to unconscious emotion effects such as sudden noise, stress, touch, pain or view. The Galvanic Skin Response (GSR)  sensor measures the conductivity of our skin, especially of our fingers. 

GSR allows you to spot such strong emotions by simple attaching two electrodes to two fingers on one hand. Simply by measuring the skin conductance (which is controlled by special part of our brain called sympathetic nervous system) we can spot and detect human emotions and stress

Specifications

• Input Voltage: 5V/3.3V
• Sensitivity adjustable via a potentiometer
• Kit includes external measuring finger cots

For how to connect and Arduino code, please click here