Can current smartphone technology tell you when a pandemic might come calling?
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9 February 2021Can current smartphone technology tell you when a pandemic might come calling?
Photoplethysmography (PPG) is a simple optical technique used to detect volumetric changes in peripheral blood circulation. It’s used in smart watches, for example, to monitor pulse and heart rate, but PPG biosensors are also found in millions of smartphones, but without any current clinical applications.
