A method of handling proximity information transmission for a mobile device in a wireless communication system is disclosed. First and second numbers of photons detected by the first and second radiation detectors are counted, and a display output signal is generated in response to the first and second numbers. In another aspect, the NIC maintains a filter table supporting direct delivery of incoming unicast and multicast data packets to one user level endpoint. The image sensor produces electrical signals in response to the received illumination. In one embodiment, the distribution of the peak signals represents a uniform and a non-uniform expansion of a mechanical component. A set of rules determines whether the knowledge base common format events rise to an alert indication for further automated correlation and analysis.