A method of handling network access in a multi-user server system is disclosed. The refill bottle comprises a bottle having a bottom portion and an upper portion, an opening provided in the upper portion wherein the opening is adapted to be covered, and a refill mechanism provided in the bottom portion. The circuit can include: one or more sensors disposed on or within the substrate, that sense a feature associated with a wearer of the contact lens; and a compensation circuit disposed on or within the substrate, coupled to the sensor and that outputs information to adjust an output of the sensor. At least one of the source diffusion layer or the drain diffusion layer functions as the floating diffusion. In the process of determining the configuration information, a determination is made to find out if the monitored device is supported by the controller using information from System Support Database. The control section includes a constant current control section for executing a constant current control mode so that the current supply to the motor takes a target value, and a target current supply value change section for changing the target value when a detection signal from the rotation detection section has satisfied a predetermined condition in the constant current control mode.