A human body communication system connecting a wearable electrocardiogram device and photoplethysmogram device system will be demonstrated. This live demonstration system is composed of two wearable sensors and real-time signals display on a laptop. During the live demonstration, the system will demonstrate the effective transmission of ECG data via a body communication link with a parallel Bluetooth comparison as reference. The PPG device system acts as body communication receiver and the final display will present sample-synchronized ECG and PPG signals creating a on-body sensors sub-network.