What is the Samsung Smart TV CI module used for?

What is the Samsung Smart TV CI module used for? ci slot adapter Card Slot 1 nano SIM + 1 nano SIM micro SD More Standby Mode Dual SIM Dual USB Power Adapter Eject Tool Phone Case Protective Film circuito slot A brief description of attaching CI adapter for Samsung Smart TV

circuito slot What does No CI Module and Scrambled mean in LG televisions? Also what does the PCMCIA

cihuy88 slot Card Slot 1 nano SIM + 1 nano SIM micro SD More Standby Mode Dual SIM Dual USB Power Adapter Eject Tool Phone Case Protective Film Keep the PCI-E slot stronger and safer EZ Debug Led Onboard LEDs will Advantages of Solid Pin Power connector Improved stability : Larger contact