PRINTING AND VALIDATION OF SELF VALIDATING SECURITY DOCUMENTS

摘要

Security documents which has multiple field each of which contains information that is perceptible in more than one way. One field can contain a visually perceptible image (23, 24, 25) and a ditigal watermark (22) that can be detected when the image is scanned (302) and processed, another field can contain machine readable OCR text (24) that can be read by both a human and by a programmed computer, and still another field can contain watermark data (22). Documents are produced by beginning with a template (21) which defines the placement of elements on the document and the interrelationships between hidden and visual information on the document. Pictures, graphics and digital data are extracted from a data bank, and watermark data is embedded (27) in the pictures and graphics as appropriate. An automatic validation system (312) of the present invention reads multiple fields on the document, and it also automatically detects information about the user.