Provided is a sliding member having slidability and abrasion resistance both at satisfactory levels. The cradle has a cartridge storage area sized to receive and hold a toner cartridge. A collection of user profiles are used for comparison purposes and to further produce individualized compensation reports. The system comprises a plurality of electronic units, called identification tags, which are attached to the objects that have to be monitored. For example, attributes that are associated with a text entry box can be used to provide more accurate predictions of what data a user intends to enter. Therefore, an interval between two wirings constituting the coupler is not checked.