, starting with the heart rate sensor on the timepiece. The fall detector has also done its part by alerting emergency services when someone has fallen and couldn’t get up. Then came the electrocardiogram sensor delivering warnings of abnormal heart rhythms that could be the first sign of Atrial fibrillation. This year’s Apple Watch, , is expected to be unveiled later today and could include a pulse oximeter. The latter measures the percentage of oxygen in a person’s red blood cells. The data can reveal how well a heart is pumping blood, and it can even provide an early warning of a COVID-19 …
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