PPG Biosensors: The Tiny Technology Powering Wearable Health Monitoring
Photoplethysmography (PPG) biosensors are the unsung heroes of the wearable health revolution. Using light to detect changes in blood volume beneath the skin, these tiny sensors power heart rate monitoring, blood oxygen tracking, sleep analysis, and increasingly, blood pressure estimation in smartwatches, fitness bands, and medical devices. As consumers embrace continuous health monitoring,...
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