Medical science has been experimenting with smart devices for several years to determine whether these products can detect circulatory system diseases, and a study presented at the 2022 meeting of the European Society of Cardiology (ESC 2022) seems to strongly suggest that the answer is a resounding yes. The eBRAVE-AF study of more than 5,500 enrollees of middle age or older demonstrated the ability of a smartphone camera and a downloadable app to at beat conventional screening for atrial fibrillation (AF), a finding that could save lives and boost the prospects of device makers in the digital health space.