At the 2019 Apple Worldwide Developers Conference, he introduced a new single sign-on (SSO) solution called Sign In With Apple. Like the Sign In With Facebook and Sign In With Google options, Apple's solution is intended to allow you to sign up for apps and sign in with a single ID instead of creating new ones for every app and service in the world.
But it differs from those options in several important ways. Here's what you need to know about the Sign in with Apple SSO option.
The main difference between Signing in with Apple and the Facebook, Google, or Twitter sign-in options you're probably used to seeing is that Apple's solution focuses on privacy. No monitoring is done and every effort is made to minimize the amount of information about you that the application or service has access to.
When you sign up using Sign In With Apple, you have the option to change the name you provide and give the developer your real email address (the one associated with your Apple ID) or a fake one.
Your name and email (real or false, your choice) is the only information the developer gets from you, and Apple does not collect any data about your interaction with the application.
Free anonymous email forwarding
If you choose to hide your actual email from the app, Apple will generate a new email address consisting of a string of letters and random numbers and @ privaterelay.appleid.com. That address is the only thing the app or service gets, and Apple will forward any email sent to that address to your actual address.
If the developer starts spamming you or sells your email to vendors, you can go to Apple ID settings and prevent that address from forwarding the email to you.
Requires two-factor authentication
To take advantage of Apple login, you must have an Apple ID with two-factor authentication enabled. That's the default for people setting up a new iPhone or iPad these days, so for most it shouldn't be a problem.
You will also need iOS 13 or later installed on your iPhone or iPad, macOS Catalina 10.15 or later on a Mac, or tvOS 13 or later on Apple TV.
Not just for Apple devices
Signing in with Apple isn't just for use on Apple devices. You can use it on the web or even on Android devices. When you choose to Sign In with Apple on those platforms, you will be directed to a secure site hosted by Apple to enter your Apple ID and password. Then you will receive a two-factor authentication request on your iPhone, iPad, or Mac.
You will have the option to skip the two-factor authentication step for up to 30 days when you log in to the same device.
Of course, it is much simpler on an Apple device: it authenticates using Touch ID or Face ID, and voila.
Mainly intended for new accounts
For the most part, you should select "Register with Apple" the first time you sign in to a new app or service. You can use the apps and services you already have by associating your Apple ID (here are the Adobe instructions, for example), but that kind of defeats the whole purpose.
Yes, it is convenient to simply authenticate with Touch ID or Face ID on your iPhone or iPad, but the real point of login with Apple is to prevent applications from having more information about you than they need and to use a service from a provider ( Apple) will not collect any information about the use of your application.
Signing in with Apple will soon be an option in almost every app you use, at least you'll see it in every app that has other single sign-on options.
Apple has required an app to be published on the App Store to provide Sign in with Apple as an option if the app offers other third-party SSO solutions (such as sign in with Facebook, Google, or Twitter). That means you have to sign in with Apple if you have to sign in with Facebook, unless you actually sign in to a Facebook app. The deadline for that change was April 30, 2020, but it has been pushed back to June 30 in light of the COVID-19 pandemic.
Of course not to have to sign in with Apple. You can use the single sign-on option you want, or none. But if you want the benefits of improved privacy and no tracking of personal data, it may be your best option.