Safari Privacy Overview 
 Safari Privacy Overview Learn how the Safari web browser protects your privacy. November 2019 Introduction 3。

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

in to iCloud with their Apple ID. Sign in with Apple | November 2019 3 Signing in on the web and other platforms Users can also use Sign in with Apple to si...

https://www.apple.com/jp/privacy/docs/Sign_in_with_Apple_White_Paper_Nov_2019.pdf