1. A method of providing an authentication clue for a document, the document to include at least one of a photograph and information, the document to further include a design, said method comprising the steps of: selecting a set of data from at least one of the photograph and information; reducing the selected set of data to a first number; and altering characteristics of the design according to the first number, wherein evidence of the altered design characteristics is found in both the spatial domain and the frequency domain, and wherein the evidence in either of the spatial domain or the frequency domain providing the authentication clue.