| 摘要 |
This invention enables the mail and package delivery agencies to discourage, combat, and contain terrorist acts through postal and package delivery networks. The invention adds a few new components, to regular postage stamps, and incorporates associated methodology for use in sorting and processing stations in order to authenticate, isolate, and track the postage to its purchaser. Bar codes supplied on this postage contain some hidden components. At the time of sorting the mail by automated machines, computerized logic will scan and read the components contained therein. By decrypting and cross checking of the hidden components, altered or stolen postage would be identified, and the associated mail piece is ejected off distribution track, and isolated into sealed bins for further examination.
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