| 摘要 |
<p>In various aspect the invention provides a method, apparatus, system and network for monitoring of a fleet of geographically distributed devices. A device monitoring apparatus associated with each member of the fleet is arranged to transmit a public code which identifies the device, and which preferably identifies the device as a member of the fleet of devices being monitored and which provides dynamic operational information in relation to the device. User terminals circulated around the locations of the fleet receive these public codes and determine a geographic location for each identified member of the fleet which they come into contact with.</p> |
