| 摘要 |
<p>Methods, systems, and computer programs are described for detecting items within stores that are not intended for sale, so as to prevent a sale or re-sale of those items. The items are marked with identifiers, such as smart tags. Each of the items may be registered as being sold, perhaps within a data record associated with the item and the identifier, when the items are sold. As a result, the data record may later be checked, prior to a potential reselling of the item, in order to prevent maliciously manipulated items from being sold or re-sold. Similarly, if there is no correspondence between an item's detected identifier, if any, and one of the data records, then the item may be prevented from being sold or re-sold. An alarm signal may be provided if such a prevented sale is detected.</p> |
