Multipurpose smart SIM card based on mobile database and location dependent query

According to increasing development of technology and in order to approaching electronic government, most citizen services are presented electronically using smart electronic cards. Regarding this fact, people have several smart cards which are increasing in number everyday. Despite of so many advantages, these cards have various disadvantages such as multiplicity, troublesome carrying, unavailability of card readers in many places, waiting in the queues of ATMs, etc. In this paper we will present a new approach named multipurpose smart SIM card in order to solve these problems. Proposed SIM card, acts based on mobile database architecture that we will discuss about this architecture and location dependent queries processing in it. Then we will study the problem of finding the nearest and most unoccupied ATM as a case study and at last we will propose a method to authenticate users in this system.