The majority of people have a blood oxygen level of 95 99%.
How Does Apples Blood Oxygen App Work?
Further, the optical heart sensor has been redesigned in such a way to add blood oxygen measurement capabilities.
Photodiodes then measure the amount of light reflected back.
Advanced algorithms use this data to calculate the color of your blood.
He also tried another fitness tracker, Fitbit Sense but it too provided incorrect blood-oxygen readings.
At other times, it reports my blood oxygen is so low I might be suffering from emphysema.
(I am not.).
On trying one-size smaller, some of those unsuccessful measurement errors were removed, but not all of them.
Also, it left a slight imprint on Fowlers wrist.
What Could Be The Problem?
In case of a pulse oximeter, its accuracy is directly correlated to its design.
The pulse oximeter is placed at the tip of your fingertip that is filled with blood-carrying vessels.
The flow of blood through the finger increases the signal the blood oxygen sensor is trying to read.
Nonetheless, this is Apples first try and it is still working on improving the feature.
source: www.techworm.net
