Browse Prior Art Database

New lock feature for the mobile phones with SIM card to prevent working with it when it was stolen and was switched on.

IP.com Disclosure Number: IPCOM000010527D
Original Publication Date: 2002-Dec-11
Included in the Prior Art Database: 2002-Dec-11
Document File: 2 page(s) / 86K

Publishing Venue

Motorola

Related People

Leonid Krasnopolsky: AUTHOR [+3]

Abstract

Many mobile phones in the market (like GSM phones) use SIM (Subscriber Identity Module) card to store user identity information. These cards, has a special password called PIN (Personal Identity Number) that is used for security authentication during power on. This feature can be switched off. When unauthenticated person, switch on mobile with PIN enabled verification, it will be prompted to input PIN number (usually 4 digits code). Without this input, user can initiate emergency call only, all other calls and features are disabled until successful PIN verification. After 3 unsuccessful PIN verifications SIM is blocked, and can’t be used. This mechanism used to protect stolen equipment from unauthenticated access and sometimes it is called as CHV – Card Holder Verification.

This text was extracted from a Microsoft Word document.
This is the abbreviated version, containing approximately 50% of the total text.

_________________________________________________________________________________

 

Leonid Krasnopolsky

Danny Zadok

Tzvi Merchav

 

New lock feature for the mobile phones with SIM card to prevent working with it when it was stolen and was switched on.

Overview

Many mobile phones in the market (like GSM phones) use SIM (Subscriber Identity Module) card to store user identity information.� These cards, has a special password called PIN (Personal Identity Number) that is used for security authentication during power on. This feature can be switched off. When unauthenticated person, switch on mobile with PIN enabled verification, it will be prompted to input PIN number (usually 4 digits code). Without this input, user can initiate emergency call only, all other calls and features are disabled until successful PIN verification. After 3 unsuccessful PIN verifications SIM is blocked, and can’t be used. This mechanism used to protect stolen equipment from unauthenticated access and sometimes it is called as CHV – Card Holder Verification.

Problem

When the mobile owner finds that the phone has been stolen, he/she should call the service provider to block usage of this mobile in the system.�

In practice it takes a while to detect that the phone has been stolen. He/She needs to check bags, pockets, working places, etc. If the stolen phone was left ON, the unauthenticated person can continue using the phone. He can use it until the service provider blocks it in the system or until the phone is powered off.

Problem decision

New proposed feature in Mobile Equipment can help to bar all outgoing calls from unauthenticated access, that is mostly enough in many co...