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Google researchers use off-the-shelf headphones to measure heart rate
Google researchers use off-the-shelf headphones to measure heart rate Illustration: The VergeTypical heart rate monitoring in wearable tech, like smart watches or wireless earbuds, relies at least partially on photoplethysmography (PPG), which uses light pulses to measure blood activity. It works generally well, but it has its limitations. Google scientists wrote in a new research blog spotted by 9to5Google yester...
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