| 摘要 |
The invention concerns a system wherein labels (200) bear a product identity mark (210) and a coded mark (212) readable by another technique and capable of being modified in controlled and irreversible manner from an intact state to disabled state. A validating unit (100) comprises means for reading (106) and storing (104, 114) the identity of the product and means for reading (108, 110, 112) and for disabling (108, 110, 112) the coded mark. The activation of the storage means is conditioned by a prior reading of the coded mark and determining the intact state thereof, and the activation of the storage means brings about the activation of the means disabling the coded mark. The reading of marks, the storage of the product identity and the modification of the coded mark are concurrent and indivisible operations.
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