Removable accessory for a computing device

A method comprising:

• receiving, by one of a plurality of accessory computing devices removably attached to a mobile telephone, a selection of content from the mobile telephone, each of said plurality of accessory computing devices storing a different selection of content received from the mobile telephone prior to detachment of the accessory computing device from the mobile telephone;
• displaying the received selection of content to a user of said one of the accessory computing devices;
• receiving, via said one of the accessory computing devices, a command from the user, said command being based on user interaction with the displayed selection of content;
• and
• instructing, by said one of the accessory computing devices, the mobile telephone to perform the received command to affect execution of an application running on the mobile telephone.

One or more computer storage media having computer-executable components, said components comprising:

• an inventory component for identifying a plurality of accessory computing devices associated with a mobile telephone, wherein each of the plurality of the accessory computing devices are configured to be removably attached to the mobile telephone;
• an interface component for receiving, from a user of the mobile telephone, a selection of content to be associated with and stored on one or more of the plurality of accessory computing devices;
• a transfer component for transferring the selection of content to the plurality of the accessory computing devices prior to detachment of the accessory computing devices from the mobile telephone;
• and
• an update component for communicating with each of the plurality of detached accessory computing devices, wherein the update component provides, to the accessory computing devices, data related to the selection of content associated with each of the accessory computing devices,
• said mobile telephone receiving instructions from the accessory computing devices based on user interaction with the transferred selection of content to perform a command that affects execution of an application running on the mobile telephone.