
Single Sign-On allows folks to sign in with their cable credentials, watch apps like AMC and WatchESPN, without having to log in to each and every one. Similar to Facebook and Twitter log ins on iOS.
Currently the feature is limited to 8 providers: CenturyLink Prism, DirecTV, Dish, GTA, Hotwire, Hawaiian Telecom, MetroCast, and Sling TV. To find apps which support the feature, head on over to the App Store where you should find a special section for Single Sign-On.