| 摘要 |
Methods and devices for preventing unauthorized use of mobile devices allow users to create a mobile device identification number (MDIN) which must be entered before mobile devices can access a new removable memory unit. Upon activation a mobile device may check an identifier of an installed removable memory unit to determine if the memory unit has been changed. If the mobile device determines that the memory unit is new, it may prompt the user to enter the MDIN. If the entry made by the user matches the MDIN stored in secure memory, the mobile device will access the new memory unit and function normally. However, if the entry does not match the MDIN stored in memory the mobile device may not access the new memory unit, thereby denying use of the mobile device. Example removable memory units include Subscriber Identity Modules, Universal Integrated Circuit Cards, and Removable User Identity Modules. |
