The present invention provides a communication system and a communication method, whereby a communication status in wireless communications can be arbitrarily designated at the mobile station side, thereby enabling the optimization of communication costs according to the communication status, the structure of the communication system including a mobile station 20 and a base station 30. A server computer may determine a time for the client computers to update the software application and send an update command to each of the client computers at the determined time. When using the stored-value container to buy beverage, instead of paying with cash or a stored-value card, a consumer can hand the stored-value container to a store clerk to finish payment directly through the stored-value chip. The nozzle guard is positioned on the printhead such that it extends over the exterior of the nozzles and permits ink ejected from the nozzles to pass through the apertures and onto the substrate. A replacement clinical device may be located, using clinical identifiers, and presented to the clinician.