I worked on the first study to detect afib with an Apple Watch (plus a deep neural network): https://jamanetwork.com/journals/jamacardiology/fullarticle/2675364

I worked on the first study to detect afib with an Apple Watch (plus a deep neural network): https://jamanetwork.com/journals/jamacardiology/fullarticle/2675364 https://jamanetwork.com/journals/jamacardiology/fullarticle/... These watches have come a long way, from simple optical heart rate sensors to FDA-cleared ECGs. Apple's afib algorithm was recently cleared by the FDA to validate _other_ algorithms, as one symbol of accuracy. Atrial fibrillation is believed to cause 1 in 4 strokes, so there's real potential to save lives.