A latched, spring loaded valve having a water sensor and an activation mechanism shuts off water supply, when a water leak is detected, to specific application as cloths washing machines, dishwashing machines, sinks, toilets, and refrigerators equipped with ice makers. Here, a circuit is provided that includes additional amplifiers and a capacitor network that compensates for this settling error. The system controller switches, when the image data to be transmitted to the image data control section conflicts with one another, a transmission mode of the image data in conflict with one another. The controller includes a security engine that uses critical security parameters stored in, and received from, the smart-card device. As the number of clients and resources that use the system increases, the server knowledge also increases with respect to the number of resources that can be found and in the physical range over which other people and places can be found.