Card share, too well-known as control word sharing, is a scheme of permitting many userss or digital tv receivers to access a pay tv system with no more than one legal pay tv card. This is realized with automatic card share a portion of the valid access smart card’s output information, enabling every recipients to gain real-time share to mixed DVB signals, held on the encrypted tv chanells.

Usually, a legal smart card is connected to a box digital tv receiver, which have programm to share the encoded 64-bit secret key with a internet. When a user receives key, they can view tv content. Card sharing – general scheme of pirate decryption. Big progress of card share device and programm has taken place in Europe.

Card sharing possible without problem on a slow, but stable, internet connection because the control word is very little. It’s has sparked the making of sharing net groups, in which clients have access the group by sharing their subscription tv cards with the group, and every clients cards can decrypt channels. Access to this card share server limited, except clients who pay the servers owner. TV chanell providers typically get extra money for viewing channels on a second tv smart card. In the UK its doing Sky Multiroom for example.

One professional way, realized with providers, is to update the soft of receivers provided by the subscription pay tv. This soft realize a extra decryption level, started within the tv receiver. More easy method, used by some providers, is to easily raise the regularity of control word modifications. With modification occurring as often as once each any seconds, more stress have the tv smart card share system, meaning that users can be blocked by small, frequent, missed tv view times.

One major trouble for tv card share pirates is that their movements can be traced, with tracing IP address. In Liverpool guy was prosecuted for business with card sharing network to pay tv clients. It was the first type in the UK.