Can a smartwatch detect heart problems?

Smartwatches have added more and more sensors related to the heart. While these can be practical for tracking workouts, detecting heart problems is another matter. — dpa

It may be tempting for someone with heart disease to rely on a smartwatch to tell them when something's going wrong with their ticker.

After all, wearables have many features that can be used to record the condition of the cardiovascular system, such as pulse sensors and the ability to carry out a simple ECG.