A system for customizing content items available through a display of a locked mobile computing device, said system comprising: a memory area for storing one or more content items received by a mobile computing device while the mobile computing device is locked, said memory area further storing configuration data, said configuration data describing the one or more content items to present to a user through a display of the locked mobile computing device; a processor programmed to: receive the configuration data from the user of the mobile computing device; access one or more of the content items stored in the memory area; transform one or more of the accessed content items based on the configuration data stored in the memory area; and present the transformed content items to the user through the display of the locked mobile computing device, wherein one or more of the presented content items are associated with an application program executing on the mobile computing device, characterized in that the configuration data further defines a subset of a functionality of the application program, and the processor is further programmed to enable the subset of the functionality through the display while the mobile computing device is locked, whereby the user interacts with the application program via said one or more of the presented content items in accordance with the enabled subset of the functionality while the mobile computing device is locked. a memory area for storing one or more content items received by a mobile computing device while the mobile computing device is locked, said memory area further storing configuration data, said configuration data describing the one or more content items to present to a user through a display of the locked mobile computing device; a processor programmed to: receive the configuration data from the user of the mobile computing device; access one or more of the content items stored in the memory area; transform one or more of the accessed content items based on the configuration data stored in the memory area; and present the transformed content items to the user through the display of the locked mobile computing device, wherein one or more of the presented content items are associated with an application program executing on the mobile computing device, receive the configuration data from the user of the mobile computing device; access one or more of the content items stored in the memory area; transform one or more of the accessed content items based on the configuration data stored in the memory area; and present the transformed content items to the user through the display of the locked mobile computing device, wherein one or more of the presented content items are associated with an application program executing on the mobile computing device, characterized in that the configuration data further defines a subset of a functionality of the application program, and the processor is further programmed to enable the subset of the functionality through the display while the mobile computing device is locked, whereby the user interacts with the application program via said one or more of the presented content items in accordance with the enabled subset of the functionality while the mobile computing device is locked.