The invention relates to an information processing device (1), including a user control unit (2) for the selection of units of primary information to be processed and functions to be invoked. The device also includes storage means (3) for storing the primary information. From the selections made by the user the device derives personalizing information concerning the use of the device and the primary information processed with the device. The personalizing information is stored separately and represents a history of the usage of the device, thus making the device more personalized to its owner.