Services helps minimize the amount of location data collected by Apple. When users choose to share identifiable location data with Apple or third parties, A...

https://www.apple.com/jp/privacy/docs/Location_Services_White_Paper_Nov_2019.pdf

from Apple Watch 3 Apple Sleep State Description REM Rapid eye movement sleep Deep Stage N3 or slow-wave sleep Core Stages N1 and N2 sleep A total of 1171 n...

https://www.apple.com/jp/healthcare/docs/site/Estimating_Sleep_Stages_from_Apple_Watch_Sept_2023.pdf