For the purpose of enabling reduction of exposure dose, in an X-ray controlling method for an X-ray imaging apparatus for producing an image based on detected X-ray signals, an upper limit of an X-ray exposure dose to a subject to be imaged is set, and the tube current of an X-ray tube is modulated so that the exposure dose does not exceed the upper limit. A system for protecting a security is also disclosed in which the system comprises a computer system for entering information related to the security and a server system for receiving the entered information and for calculating a price for a financial instrument for protecting a security and the server system for transmitting the price to the computer system. Notifications for at least one other game are obtained using the identifier for the player. The disclosed systems act to broker the needs of the utility and end-user by creating, managing and controlling the interface between these two entities. The system further includes a law enforcement station computer system, at least one third party data systems storing information relevant to law enforcement activities, and a law enforcement cloud service for storing reports. The operator performs a database query to determine emergency numbers for responding to the emergency based on the information received from the user.