Smartwatches now track far more than steps or calories. They monitor skin temperature, heart rate variability, respiratory rate and blood oxygen levels. When those readings stray from a user’s personal baseline, algorithms step in. The result can be an alert that something is off, sometimes hours before symptoms appear. Yet the systems remain better at spotting deviations than naming the exact cause. Engadget examined this balance in detail on J…
Smartwatches have long since been used only to count paces or measure heart rhythm. With increasingly sophisticated sensors and artificial intelligence algorithms (AI), these devices are approaching...