On windows you can trivially turn it off [1]. Heck, it even prompts you to decide when you install the OS. [1] On both 10&11: Start > Settings > Privacy & se

On windows you can trivially turn it off [1]. Heck, it even prompts you to decide when you install the OS. [1] On both 10&11: Start > Settings > Privacy & security > General. The name of the option differs between two, but look for the options that starts with "Let apps" and includes "advertising id"