Apple said on Wednesday that in the coming weeks it will start enforcing a new privacy notification rule that digital advertising firms such as Facebook have warned will hurt their sales. Apple said the notices will become mandatory when its iOS 14.5 operating system becomes available in the coming weeks, though it did not give a precise date.
The one-time notices will require an app developer to ask a user’s permission before the app tracks activities “across other companies’ apps and websites.” Digital advertising industry experts have said the warning could cause many users to decline permission. Apple announced the move last June, but said in September that it would delay the change to give digital advertisers time to adjust. Some developers are already displaying the notice on a voluntary basis.