[timrichard]

I don't think so. I upgraded my Fitbit to a Fitbit 5 when I started getting arrhythmias a few years back. I used the ECG capture whenever I felt something was wrong. As the irregular beats graduated into episodes of what the medics identitied as SVT (due to a worsening thyroid, as as it transpired at a later point), I captured each trace. I brought the printout of the PDF to the GP, who ordered some blood tests and referred me to cardiology. The cardiologist wanted me to email the PDF traces too as a starting point. Nobody treated it as a gimmick; in the early stages it was the difference between data and no data, because the episodes had been unpredictable.