Harvard Heart Letter

Monitoring your heart rhythm with a smartphone: A good call?

Smartphone apps that detect possible atrial fibrillation (afib) may one day help improve screening for this common heart rhythm disorder. One app currently under development relies on the phone’s camera and flash to measure color changes in a person’s finger to detect a pulse and any irregularities. Another, which is placed on a user’s chest, relies on the phone’s internal sensors that track speed, movement, and orientation. 
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