< Back to all articles Share this article Friday July 24th, 2020 The Advantages of Combining EKG and PPG in Wearables Wearable technologies are transforming the healthcare industry by enhancing patient care and improving efficiency in the supply chain. When it comes to health and wellness monitoring of patients, two primary technologies are available to device manufacturers: EKG and PPG. Defining EKG and PPG EKG (electrocardiogram) bio-sensors measure the bio-potential generated by electrical signals that control the expansion and contraction of heart chambers. PPG (photoplethysmogram) bio-sensors use a light-based technology to sense the rate of blood flow as controlled by the heart’s pumping action.