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SIM Application Toolkit

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SIM Application Toolkit (commonly referred to as STK) is a standard of the GSM system which enables the Subscriber Identity Module (SIM) to initiate actions which can be used for various value-added services.[1]

The SIM Application Toolkit consists of a set of commands programmed into the SIM which define how the SIM should interact directly with the outside world and initiates commands independently of the handset and the network.[2] This enables the SIM to build up an interactive exchange between a network application and the end user and access, or control access to, the network.[1] The SIM also gives commands to the handset such as displaying menus and/or asking for user input.[3]

STK has been deployed by many mobile operators around the world for many applications, often where a menu-based approach is required, such as Mobile Banking and content browsing.[1] Designed as a single application environment, the STK can be started during the initial power up of the SIM card[3] and is especially suited to low level applications with simple user interfaces.[4]

In GSM networks, the SIM Application Toolkit is defined by the GSM 11.14 standard released in 2001.[1][2][4] From release 4 onwards, GSM 11.14 was replaced by 3GPP 31.111 which also includes the specifications of the USIM Application Toolkit (Malaysia) for 4G networks.

Advantages

  • Some manufacturers claim that STK enables higher levels of security through identity verification and encryption, which are necessary for secure electronic commerce.[4][5]
  • STK has been deployed on the largest number of mobile devices.[5]

Limitations

{{Abbreviations|date=Sept

See also

References

  1. ^ a b c d "SIM Toolkit". Archived from the original on 2006-12-07. Retrieved 2006-11-21. {{cite web}}: Unknown parameter |dead-url= ignored (|url-status= suggested) (help)
  2. ^ a b [1] Archived April 29, 2013, at the Wayback Machine
  3. ^ a b http://www.3gpp.org/ftp/tsg_t/WG3_U/T_10/docs/t3-9346.doc[permanent dead link]
  4. ^ a b c "SIM Toolkit". Archived from the original on 2007-10-11. Retrieved 2006-11-21. {{cite web}}: Unknown parameter |dead-url= ignored (|url-status= suggested) (help)
  5. ^ a b SIM Toolkit
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