Registers – Coded record sensors – Particular sensor structure
Reexamination Certificate
1999-12-03
2001-09-11
Pitts, Harold I. (Department: 2876)
Registers
Coded record sensors
Particular sensor structure
C235S487000
Reexamination Certificate
active
06286761
ABSTRACT:
FIELD OF THE INVENTION
The present invention relates to identification document having embedded information which prevents counterfeiting of identification document.
BACKGROUND OF THE INVENTION
One important requirement for an identification document is that it needs to provide adequate measures for preventing counterfeiting, tampering, or forging of the identification document. An identification document can be an ID card, a membership card, or a credit or bank card, etc. The face image of the holder is often included on the identification document, which has been a rather effective feature for preventing the unauthorized use of the identification document.
However, as digital imaging technologies become increasingly advanced and widely available, counterfeiting is also becoming more sophisticated and more difficult to prevent. One example of the digitally assisted counterfeiting is that after the theft of an identification document, a counterfeiter can digitally scan the image on a identification document with a high-resolution digital scanner (such as a 1200 dpi flat bed scanner that is widely available). The scanned-in digital image is then processed on a computer using a commercial image processing software such as Adobe Photoshop or Corel's CorelDraw for sharpening, artifact removal, color and tone management. With the image processing software, the counterfeiter can easily replace the face of the intended holder by a different person while almost seamlessly matching the background of the face, to produce a fraudulent image. This fraudulent image is then printed on a blank substrate such as a plastic card to produce a counterfeit identification document. The digital imaging technologies have currently advanced to such a stage that this fraud identification document can appear almost identical to the original document to the naked eyes.
SUMMARY OF THE INVENTION
An object of the present invention is to provide an identification document having effective security features that minimize the counterfeiting of the identification document.
This object is achieved by an identification document for a subject, comprising:
a) a substrate;
b) a visual image formed on the substrate or a recording layer over the substrate, such visual image including an identifiable first area; and
c) invisible but retrievable embedded information formed in the identifiable first area but not formed in a second area of the visual image, such embedded information related to the subject or the use of the identification document.
An advantage of the present invention is the effective prevention of the counterfeiting of identification document. Any alteration in the critical areas of the identification document can be detected by the verification system for a denial of the counterfeit identification document. Another advantage of the present invention is that the probability of false verification is greatly reduced.
A feature of the present invention is that the information related to the subject's identification can be embedded in a particular area of the visual image on the identification document such as the face area that is also used for identifying the subject. Any alteration or tampering of the critical area would destroy the embedded information and thus result in the invalidation of the identification document under proper detection by the verification system.
Another feature of the present invention is that the information related to the subject of the identification document is embedded in the visual image. The embedded information is only extracted from the particular areas such as the face area that is used for identifying the subject. Any alteration of the particular areas would destroy the embedded information and thus result in an invalidation of the identification document under proper detection by the verification system.
REFERENCES:
patent: 4476468 (1984-10-01), Goldman
patent: 4663518 (1987-05-01), Borror et al.
patent: 5249039 (1993-09-01), Chaplin
patent: 5502304 (1996-03-01), Berson et al.
patent: 5514860 (1996-05-01), Berson
Eastman Kodak Company
Owens Raymond L.
Pitts Harold I.
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