HBO Go does not have a limit on how many devices can be activated with an individual account. However, only three devices from one account can access the service simultaneously.
In an interview with Buzzfeed, HBO CEO Richard Plepler claimed that sharing HBO Go passwords has a positive future effect on the company's bottom line. HBO does not discourage customers from sharing HBO Go with friends and family members, seeing this as effective marketing and exposing content to future customers. HBO Go is a way for subscribers of HBO content to stream shows on various electronic devices, such as smart TVs, tablets and smartphones.