Apple has launched Single Sign-on, a service designed to make logging into TV apps much less annoying. It "allows cable subscribers to sign in once with their cable credentials to gain access to all cable-restricted content in iOS and tvOS apps," writes Juli Clover via MacRumors: Single Sign-on is limited to the United States, and according to a support document, is available for the following providers: CenturyLink Prism, DirecTV, Dish, GVTC, GTA, Hawaiian Telecom, Hotwire, MetroCast, and Sling. While Single Sign-on was introduced and tested in the tvOS 10.1 and iOS 10.2 betas, the feature was remotely released today to all iOS 10 and tvOS 10 devices. Using Single Sign-on does not require one of the betas, and is instead immediately available to all iPhone and Apple TV users running iOS 10 or tvOS 10. With Single Sign-on, customers with a supported provider will use the Settings options in iOS or tvOS to sign in with their cable credentials. From then on, when accessing a supported app that requires a cable subscription, the app will ask to use the saved sign-on credentials. Most cable channels and content providers offer individual apps on the Apple TV and iOS devices, but still require cable authentication before users can access content. Prior to Single Sign-on, customers were required to enter their credentials in each individual app, a frustrating and time-consuming process.