arrow indicates that location data has been used in the last 24 hours. Location in the Photos app When the user gives permission, the Camera app is granted ...

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

or vice versa (REF_HTF) to control for the variable of listening fatigue or practice effects after。

https://www.apple.com/jp/health/pdf/Hearing_Health_Features_on_AirPods_Pro_2_October_2024.pdf