The live TV streaming from these channels is available through a browser at CNN.com and on dedicated apps for the Apple iPad and iPhone. Time Warner said the service will also be available for other smartphone and tablet operating systems later. The way it works via a browser is that people can go to the CNN.com video page and click the "Live" tab. Then they'll log in through their cable, satellite, or telecom provider with a username and password. Mobile device users can download the CNN App for iPad or the CNN App for iPhone and iPod Touch (or update their app to version 1.2 for iPhone, 1.1 for iPad), and authenticate in the same way. Time Warner has been at the forefront of the "TV Everywhere" effort that allows people to watch TV programming as part of their existing paid TV subscriptions on their mobile devices. The company has already been offering its HBO Go service to people already subscribed to certain paid TV services, such as DirecTV. The idea behind offering TV content on multiple screens, such as tablets and smartphones, is to keep TV viewers subscribed to paid services by offering them more variety and flexibility in how they view their favorite programs and channels.