Apple developers that want to use certain APIs will have to submit an explanation of why they are necessary for program function, as part of a new effort to combat user fingerprinting.
Some of Apple’s new privacy rules have gone active ahead of iOS 14.5, and the most recent looks to make device fingerprinting a thing of the past on the App Store.
Apple's IDFA usage terms will soon require app developers to obtain affirmative consent before tracking. Device fingerprinting appears to be the popular alternative in spite of the risk of being banned.