VideoGuard

VideoGuard (sometimes referred to simply as NDS), produced by NDS, is a digital encryption system for use with conditional access television broadcasting. It is used on digital satellite television systems - some of which are operated by News Corporation, which owned about half (49%) of NDS until its sale to Cisco in 2012 (becoming Cisco Videoscape division). Since 2018 VideoGuard is improved and maintained by Synamedia (Cisco's spun-off company based on its former Videoscape division). Its two most widely used implementations are Sky in the United Kingdom and Ireland and DirecTV in the United States, the former of which launched the digital version of the system in 1998.