2024-07-27
The principle behind non-invasive blood glucose testing on smartwatches involves the use of a sensor that emits light onto the wearer’s skin. This light is absorbed by the skin and the underlying tissues, including the blood vessels.
The amount of light absorbed by the blood vessels is directly proportional to the concentration of glucose in the blood. By measuring the amount of light that is reflected back to the sensor, the smartwatch can estimate the wearer’s blood glucose level.
