| 摘要 |
<p>Vehicles are provided with cells (P1, P2) embedded in one of their main outer surfaces, but invisibly and at an indeterminable point. These cells are able to passively define, without individual electrical supply, a remotely readable unique code associated one-to-one with the vehicle. Identifying information in connection with some at least of the unique codes is recorded in at least one reference file (F5). Obligatory transit routes are each provided with a detector (L3) able to read on each vehicle the code defined by the cell(s) which it carries, as well as processing units (04) able to search for whether each code read is to be found in the reference file, and to store the result of this search. <IMAGE></p> |
