VERIFYING THE AUTHENTICITY OF PRINTED DOCUMENTS ON UNIVERSALLY AVAILABLE PAPER STOCK
专利汇可以提供VERIFYING THE AUTHENTICITY OF PRINTED DOCUMENTS ON UNIVERSALLY AVAILABLE PAPER STOCK专利检索，专利查询，专利分析的服务。并且Universally available preprinted forms are used in a general purpose printing device to allow for the subsequent verification of the authenticity of a printed document such as a ticket, stamp, check, or money order. In operation, the user accesses the seller of the goods/services and during an information exchange with the seller there is inputted at least a portion of the preprinted data from the form. The seller then uses this information to formulate a printable control indicia which is then printed on the form at the user's location. When the form is subsequently presented to the seller, for example when the user uses the form he/she printed, the preprinted portion of the form is used to obtain a decipher key which in turn is used to decipher the control indicia. If desired, a special security marking may be associated with the form for additional security. Inability to decode the control indicia indicates that the printed material on the form may not be authentic. A vending machine is shown in one embodiment.，下面是VERIFYING THE AUTHENTICITY OF PRINTED DOCUMENTS ON UNIVERSALLY AVAILABLE PAPER STOCK专利的具体信息内容。
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