Generally, embodiments of the invention relate to analyte determining devices that include an indicator element that provides information relating to service history of the analyte determining devices, including, for example, previous use of the analyte determining devices. The soap dispenser comprises a soap holder for holding a soap cartridge. A set of characters or other symbols is divided into subsets, each subset being represented by a control button for display on the reduced size input area for user selection. The invention permits the passage of pedestrians, vehicles, etc. The step-upstep-down unit controls step-up conversion in discharging and step-down conversion in charging. The information storage layer may be disposed between the semiconductor pattern and the conductive patterns.