January 4, 2017 — A smartphone application made it possible to use the iPhone camera to detect atrial fibrillation via facial signals and without physical contact, according to a preliminary study presented at the American Heart Association (AHA) Scientific Sessions 2016 in November.
The technology, called Cardiio Rhythm, detects subtle beat-to-beat variations in facial skin color, which reflect a person's heart rate fluctuation. They tested the app on 85 hospitalized patients, comparing the app to recordings on a 12-lead electrocardiogram (ECG).