Patent ID: 7137003
Filing Date: 2006-11-14
Classification: H04M,H04W,Y02D

Abstract:
1. A Subscriber Identity Module (SIM) adapted for and powered by a wireless communication device (WCD), the WCD including a power management routine and a memory, the SIM comprising: means for storing a first unique identifier; means for receiving a second unique identifier from the WCD at an initial power up of the WCD, the second unique identifier being entered by a user of the WCD; means for accessing the first unique identifier at the initial power up of the WCD to compare the first unique identifier to the second unique identifier and to permit access to the SIM by the WCD based an the comparison; means for automatically receiving the second unique identifier at a subsequent power up of the SIM without the user re-entering the second unique identifier following the SIM having been powered down under control of a power management routine performed by the WCD; means for comparing the second unique identifier automatically received from the WCD to the first unique identifier following the subsequent power up; and means for enabling access of the SIM by the WCD) based on the comparison following the subsequent power up.