While VideoGuard is primarily a professional broadcasting tool, you might encounter references to "keys" in online forums regarding or card sharing . These are unofficial methods used to emulate the hardware's security to view content without a standard receiver, though many modern versions of VideoGuard include "pairing" features that make this extremely difficult.
: One of the most widespread users of the digital VideoGuard system. videoguard keys
: Over 26 providers, including China Central Television and Sky Network Television, use this system for conditional access . videoguard keys