https://phys.org/news/2018-06-apple-touts-privacy-features.html

Apple, kicking off its annual developers conference, appeared to be setting itself apart from Facebook, which has drawn the ire of privacy activists, and even showed how its software could prevent the social network from tracking users on Apple devices.

The upcoming versions of software powering iPhone and Mac computers will block the use of so-called "cookies" from Facebook "like" buttons that can follow people from one website to another, Apple said.