When setting up a new account, some apps and websites let you sign in with your social media and online accounts such as Facebook, Google and Windows Live. Where available, you can also sign in using your Apple ID.
You sign in with Apple using your Face ID our Touch ID. Your account is created on the website or app in question, without you having to type in your details and come up with a password. It’s very convenient and quick.
If you’re signing in to an app and you don’t want to give them your email address, you can register using a random address generated by Apple, and forwarded to your iCloud email. This can be deleted whenever you choose.
Sign in with Apple is authenticated using Face ID or Touch ID, so you only have to look at your iPhone or place your finger on the Home button to prove it’s you accessing your account. It’s simple, convenient, and very quick to do.