Sky Go is an online television service from Sky which launched in January 2006. The service allows users to watch live and on demand video content from their Mac, Windows PC, mobile phone, Xbox 360, Xbox One, PlayStation 3 or PlayStation 4 via a broadband or Wi-Fi internet connection. On demand content comprises sports highlights, latest news, movies and TV programmes. Content is viewable for a limited amount of time and is protected by digital rights management software provided by Microsoft and the NDS Group, and therefore cannot be copied to disc or viewed beyond the date carried by its license. The service is available at no extra cost to existing Sky TV customers, with accessible content depending on the subscriber's Sky package. Non-Sky TV customers can access the service by subscribing on a pay-per-view basis.