Harvard Heart Letter
A blood pressure reading from a video selfie?
Research we’re watching With some smartphones, you can unlock the phone simply by showing your face. One day, a short video of your face may do far more — maybe even measure your blood pressure. That’s the premise of a novel smartphone-based technology described in the August issue of Circulation: Cardiovascular Imaging. For the study, researchers took two-minute videos of 1,328 Chinese and Canadian adults, using an iPhone equipped with transdermal optical imaging.