: I'm not sure I fully understand. You mean that in some cases there's no actual PPG readings and it just uses the accelerometer-data to make a guess for the heart rate? Do you have an example of that? I know that most wearables that use PPG take movement into account but rather in order to remove the noise/artifacts that are introduced in the readings as a result of moving the arm. In that case I wouldn't say it's 'guessing'? - [[User:Gedankenstuecke|Gedankenstuecke]] ([[User talk:Gedankenstuecke|talk]]) 12:31, 1 July 2022 (UTC) | : I'm not sure I fully understand. You mean that in some cases there's no actual PPG readings and it just uses the accelerometer-data to make a guess for the heart rate? Do you have an example of that? I know that most wearables that use PPG take movement into account but rather in order to remove the noise/artifacts that are introduced in the readings as a result of moving the arm. In that case I wouldn't say it's 'guessing'? - [[User:Gedankenstuecke|Gedankenstuecke]] ([[User talk:Gedankenstuecke|talk]]) 12:31, 1 July 2022 (UTC) |