May 17Liked by Marco Altini

Thanks, Marco! We have the Scosche Rhythm24 and Kyto2935 in our validation pipeline, and surprisingly, they don't seem to be promising, even during sitting still conditions. My observation is that there is considerable variation between individuals; I have participants for whom these sensors do not even transfer the data (potentially confounding factors such as BMI, skin color, or even blood pressure may play a role). When a sensor fails to provide a good signal - or even any signal at all in some cases - in a participant, out of curiosity, I sometimes test it immediately on my hand/earlobe, and it works just fine. Hopefully, the first draft of the paper will be ready in a few months and love to hear your thoughts on it :)

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