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

The impact of Apple’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.

Facebook has said the rules could harm its customers. Some mobile advertising analysts believe fewer than one in three users will opt-in, which could diminish the effectiveness and profitability of ad targeting.