Importance

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Abstract

A postage stamp which has a unique identifier bar code is provided which allows the prevention of various fraudulent stamp usages. A system for identifying mail pieces with stolen stamps is provided in which a database of unique identifiers of stolen stamps is maintained, and in which the unique identifiers of stamps on originating mail pieces are compared to the unique identifiers in the database and with the mail piece being segregated if one of the stamps has been stolen. A method of preventing stamp reuse is also provided in which at an originating mail processing apparatus unique identifier bar codes on stamps are read and sent to a national circulation database together with an identification tag applied to the mail piece and information identifying a destination mail processing plant. The national circulation database makes a determination of whether the stamp has been reused, and if so sends a message to the destination mail processing plant which segregates the mail piece when it arrives. The invention also provides a mechanism for identifying short paid postage by providing stamps which each include a value in an identifier bar code, A mail processing apparatus then can determine the value of the stamp, and can determine if the mail piece has been short paid for its weight and destination.

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First Claim