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SIM card technology from A-Z

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SIM card technology from A-Z
36th Chaos Communication Congress

Billions of subscribers use SIM cards in their phones. Yet, outside a relatively small circle, information about SIM card technology is not widely known. This talk aims to be an in-depth technical overview.

Today, billions of subscribers use SIM cards in their phones. Yet, outside a relatively small circle, information about SIM card technology is not widely known. If at all, people know that once upon a time, they were storing phone books on SIM cards.

Every so often there are some IT security news about SIM card vulnerabilities, and SIM card based attacks on subscribers.

Let's have a look at SIM card technology during the past almost 30 years and cover topics like

  • Quick intro to ISO7816 smart cards
  • SIM card hardware, operating system, applications
  • SIM card related specification bodies, industry, processes
  • from SIM to UICC, USIM, ISIM and more
  • SIM toolkit, proactive SIM
  • eSIM

Speakers: LaForge