Secure communication sessions between a client and server start by pulling in the requestor's (user's and machine's) PAC identifier from the initiating host machine.

CI is a non-visual content into static visual identifier to the application of very rich and diverse forms, in the most broad level, the most direct communication.

The paper mainly introduces the architecture of Ethernet-CAN gateway, setting of messages identifier, accepting filter for nodes, and the application in multicast communication.