Access to SpO2, EDA, ECG, and temperature?

I'm a researcher working for children with special needs such as ADHD. With my research group, we would like to use the Apple Smartwatch as a monitoring device in several health-related research projects. However, before buying a lot of devices, I need clear and detailed information about the accessibility of SpO2, EDA, ECG, and temperature raw data through the Apple watch.

Will I be able to access raw data to embed in my customised app? If I need to develop an app that reads and processes through custom algorithms raw data coming from these sensors, is it possible? I just want clear and detailed information before buying a lot of devices.

I too would like to know the answer. I am in Japan and it seems even the blood oxygen level function is not activated here. Currently, we use Empatica and its eco-system; my student developed an iOS App for accessing Empatica's data and customized its display. Sorry I cannot share ... but just to say it can be done.

Access to SpO2, EDA, ECG, and temperature?
 
 
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