An improved system and method for defining an event based upon an object location and a user-defined zone and managing the conveyance of object location event information among computing devices where object location events are defined in terms of a condition based upon a relationship between user-defined zone information and object location information. The system can include a multiplicity of different pluggable image processing modules. The compositions can be used for the manufacture of the housing of electronic devices. At the first temperature, the sacrificial material maintains substantially the same thickness. Otherwise, the write request is denied.