With this technology every vehicle whether stationary or moving can be networked and identified without the need of line of sight.
All communication happens through two type of sensors called reader and tag/label
Tags are tiny sensors that are pasted on vehicles. They have a unique identification number making the vehicle on which it is placed 'unique' and also some limited memory to store necessary data like vehicle no, UID no etc.
Reader is a device that can sense tags around its field, communicate with them and transmit the tag's data to the LAN/internet