“Sign in with Apple” Button is a feature offered by Apple that allows users to sign in to various apps and websites using their Apple ID. When you use “Sign in with Apple,” you don’t have to create a new account or enter your personal information on the app or website. Instead, you can use your existing Apple ID and password to log in, and Apple will provide the app or website with the necessary information needed to create your account. This can be a convenient and secure way to sign in to apps and websites, as it allows you to use a single set of credentials across multiple platforms, and also helps to protect your privacy by allowing you to choose what personal information you share with the app or website. “Sign in with Apple” is available on iOS, iPadOS, macOS, and watchOS, as well as on the web.