As of May 2015, activate the HBO Go streaming service by downloading and launching the application on the intended viewing device and obtaining an activation code. Then, visit the activation page at HBOGo.com, and select your cable provider. Finally, enter the code within the specified time limit.
HBO Go allows HBO customers to watch the network's programming on demand through devices such as streaming players, smart phones, tablets, video game consoles and computers. The main requirement to use the service is an active cable subscription that includes the HBO service. To begin the activation process, you need to launch the HBO Go app on the device through which you intend to use the service. An unverified app displays an activation code upon loading, which is then used to link that device to a cable account through HBOGo.com.
Once on the activation page, choose the type of device you want to activate, such as a PlayStation 4 or a Roku streaming device. Next, choose your cable provider, and log into your account. The login information is typically created when you sign up for your cable service. Once you log in and verify your cable subscription, you need to enter the activation code before it expires.