Prevention to address this problem. The goal of ITP is to limit tracking while still enabling websites to function normally. ITP works by learning which dom...

https://www.apple.com/jp/safari/docs/Safari_White_Paper_Nov_2019.pdf

To determine HRV, Apple Watch captures a tachogram—a plot of the time between heartbeats—every two to four hours. Beginning with watchOS 5.1.2, users may al...

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