Unless I'm missing something, the user can set this to all zeroes. https://developer.apple.com/documentation/adsupport/asidentifiermanager/1614151-advertisingi

Unless I'm missing something, the user can set this to all zeroes. https://developer.apple.com/documentation/adsupport/asidentifiermanager/1614151-advertisingidentifier https://developer.apple.com/documentation/adsupport/asidenti... A sane default would be nice but there's a lot of other information that can be used to fingerprint a user from their device, device names and carrier names along with a bunch of other device settings are accessible without asking for permission. Unfortunately there's no current way to limit these.