A system and method for printing images for use in an authentication document from a plurality of different printers and/or capture devices. Each of the plurality of different printers and/or capture device having a unique ID. The images are printed on an authentication document with the unique ID. The system provides for verification that the presenter of an authentication document. The unique ID and/or other information may be provided in a form that is not visible under normal viewing conditions. By canning the image the unique ID may be obtained and used for authentication. The obtained ID may be compared with a known information stored at a database for confirming that the presenter of the authentication document is the individual to whom it was issued.

 
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> Steganographic method for covert audio communications

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