<ul data-eligibleForWebStory="true">Apple introduced a new Automatic Sign-In API making it easier to sign in to apps across multiple Apple devices.The feature will allow users to sign in to an app on one Apple device and be automatically signed in on other Apple devices.Developers need to implement this functionality which is available with the latest software releases such as iOS 26 and tvOS 26.This will eliminate the need to repeatedly enter usernames and passwords across different Apple platforms.The new feature links app logins to a user's Apple Account.tvOS 26 is currently in beta testing phase.The Automatic Sign-In API is aimed at facilitating a seamless user experience.Users signing into an app on one Apple device will now also be signed in on their other Apple devices.Implementation of this feature will require developers' participation.Apple Account login will be key to utilizing this new sign-in functionality.The feature will help users avoid the hassle of logging in multiple times.This advancement is expected to enhance user convenience and simplify the sign-in process.tvOS 26 is part of Apple's ongoing software updates aimed at improving user experiences.The feature's availability is linked to the software versions like iOS 26 and tvOS 26.Apple's latest sign-in feature is rolling out gradually and requires app developers to adopt it.The convenient sign-in feature provided by Apple is intended to streamline the user authentication process.