Apple will add the ability to register to third-party sites using Apple ID.
What is known
In iOS 11.3 beta found a piece of code that hints at future innovations. Users of iOS will be able to log in to sites using Apple ID. The resource will receive information about the real name and email of the user to identify the person. You can also use the QR code to access the site by Apple ID.
This technology will make it easier for users to access third-party sites. It's easier to remember one Apple ID than a dozen logins and passwords. This chip may appear in the final version of iOS 11.3, since Apple TV already has a single system for logging into sites.