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GSM and UMTS (P13)

Since its conception in 1988 the Subscriber Identity Module (SIM) has undergone continuous development extending its technical and functional capabilities. Initially, it was defined as a security module to authenticate the user to the network providing, at the same time, some very limited amount of memory for network and private user data. In those days, smart cards were still in their infancy. The technological and market requirements of GSM, its need for a global solution and its growing market power shaped the face of the SIM and changed the world of the smart card | GSM and UMTS The Creation of Global Mobile Communication Edited by Friedhelm Hillebrand Copyright 2001 John Wiley Sons Ltd ISBNs 0-470-84322-5 Hardback 0-470-845546 Electronic Chapter 13 The Subscriber Identity Module Past Present and Future Klaus Vedder1 13.1 Introduction Since its conception in 1988 the Subscriber Identity Module SIM has undergone continuous development extending its technical and functional capabilities. Initially it was defined as a security module to authenticate the user to the network providing at the same time some very limited amount of memory for network and private user data. In those days smart cards were still in their infancy. The technological and market requirements of GSM its need for a global solution and its growing market power shaped the face of the SIM and changed the world of the smart card. Today s SIMs offer more than just security. They are a secure platform for operator defined services allowing operator differentiation by exploiting the power of the microcomputer in the SIM. All this could not have been achieved without the close cooperation of all parties involved in its standardisation. 13.2 The Committee From a dozen participants at the first meetings in 1988 to about 70 delegates at the last meeting in January 2000 reflecting the growing importance of the SIM SIMEG SMG9 SIM Aspects and SMG9 IC Card Aspects . Three names and only two chairmen for one committee which in 56 ordinary plenary and hundreds of working party and ad-hoc meetings defined the Plug-in SIM which has become the best-selling smart card required the use of high temperature plastic material to support the new environment specified new and advanced electrical and physical parameters such as low power consumption and the 3 V smart card interface and advanced the SIM from a security and storage device to a secure platform for value added services. 1 The views expressed in this chapter are those of the author and do not necessarily reflect the views of .