| 摘要 |
<p>This identification code for documents comprises a plurality of magnetic regions (1) which have diversifiable magnetic intensity and are mutually separated by spaces (2). At least one first part (1a) of the regions has a magnetic coercivity which differs from the remaining regions (1b) of the plurality of regions, in order to obtain at least two different readouts of the same plurality of regions upon applying different magnetic fields for orientating the plurality of regions.</p> |
