Abstract: One implementation is for a device. The device includes a controller having a memory protection unit, a legally relevant memory portion capable of interacting with the controller, a legally non-relevant memory portion capable of interacting with the controller, an interface in the memory protection unit that allows a privileged application to access the legally relevant memory portion and disallows an unprivileged application to access to the legally relevant portion, and an interrupt system, wherein when the unprivileged application makes an attempt to interact with the legally relevant memory portion, the memory protection unit takes an action associated with the unprivileged application.

Abstract: One implementation is for a device. The device includes a controller having a memory protection unit, a legally relevant memory portion capable of interacting with the controller, a legally non-relevant memory portion capable of interacting with the controller, an interface in the memory protection unit that allows a privileged application to access the legally relevant memory portion and disallows an unprivileged application to access to the legally relevant portion, and an interrupt system, wherein when the unprivileged application makes an attempt to interact with the legally relevant memory portion, the memory protection unit takes an action associated with the unprivileged application.

Abstract: A metering system for metering consumption of a commodity. The metering system enalbing mobility based prepaid solution and event notification for energy metering. The metering system comprising a prepaid metering device, a mobile device, and a head-end system. The mobile device includes a mobile application configured to communicate with the meter and the head-end system to monitor, diagnose, register, and add credit to the prepaid metering device. The mobile application provides an automated solution for managing prepaid metering devices.