This built-in iPhone app is effective and easy to use. Before you can take your first ECG using your Apple Watch, you'll need ...

but one of the more interesting items we came across was this DIY ECG. While we have covered other DIY electrocardiograms before, he left the breadboard behind and put together a nicely done PCB ...

Most watches have a built-in ECG sensor, that can take a spot reading of your heart rate rhythm. You start the app and then place your finger on a specific part of the watch (usually the case or ...