How do smart cards work

Smart home What is a smart card?

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You cannot freely receive pay TV or private TV channels in HD quality. But if you pay for Pay TV and sharper pictures, you can get a card from many providers - the so-called smart card. With this you can activate the channels that you have booked. This article tells you what exactly the smart card is and how it works.

This is a smart card and this is how it works

A smart card looks similar to an EC card. It is just as big and has a metallic module as SIM cards contain. There is a chip inside. With the smart card you can watch digital TV or radio channels decrypt. To do this, insert the card into your television or receiver (to receive channels in HD, an HD receiver). If these devices do not have an interface for smart cards, you can use a so-called CI + module as an adapter.

If the card is inserted in the device, you can, for example, watch private TV channels HD quality received or Pay TV use - if you have booked this. The reason for this is that digital HD channels and pay TV channels are usually broadcast freely via satellite, antenna or cable, but are encrypted. Only those who pay the provider for it can decrypt the channels. The provider will then send you a smart card. As soon as you have activated this, you can use the additional TV offer.

Via the Internet even without a smart card

Providers are, for example, pay broadcasters such as Sky or cable providers such as Kabel Deutschland or Vodafone. In some cases you don't even need a smart card: modern smart TVs that are connected to the Internet can activate the paid offers in another way. Here you can often use a USB stick or an app for it.

Access control smart cards

Smart cards are not only used in televisions. They are also used, for example, to regulate access control in larger companies. Employees have such a card to identify themselves and, for example, to gain access to buildings or rooms.