iPhone, with a key reason being that Android apps “can be downloaded from just about anywhere,” while everyday iPhone users can only download apps from one ...

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

in with Apple to their app or website. It works on iOS, iPadOS, macOS, watchOS, and tvOS, as well as on the web and other platforms, so developers can imple...

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