Tag #Ppg Sensor

Why has Apple taken so long to implement a blood pressure feature in its smartwatch?

The Apple Watch's blood pressure feature will utilize photoplethysmography (PPG) technology, which has limitations in accuracy for blood pressure measurement compared to traditional cuff methods. While studies show potential for accurate hypertension detection using PPG and machine learning, the single-site PPG sensor in the Apple Watch may limit precision. Apple's patent for a liquid-inflated cuff suggests alternative approaches are being explored.