Impact of Apple ad tracking changes will hinge on app developers, exec says

FILE PHOTO: Silhouette of a mobile user seen next to a screen projection of the Apple logo in this picture illustration taken March 28, 2018. REUTERS/Dado Ruvic/Illustration

(Reuters) - The impact of Apple Inc's new privacy controls over digital advertising tracking is likely to depend greatly on how app developers implement a new pop-up notification, Apple's user privacy chief told Reuters.

Apple on Monday started enforcing a rule introduced last year requiring developers to use a pop-up notification seeking permission to gather data that can be used to track users across third-party sites and apps.