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by PaulHoule 861 days ago
I can't tell if they are using a 2-lead or 3-lead ECG. Personally I think it's pretty cool that a 12-lead EKG can see the electric field generated by your heart as a vector

https://en.wikipedia.org/wiki/Electrocardiography

I've had health care professionals wire me up for a 12-lead ECG (always normal so far) in less than a minute too.