Authentication of identification documents using digital watermarks
First Claim
1. An identification document including:
- a first image embedded with watermark data and printed on the document;
wherein a copy of the first image is embedded with watermark data, and is referenced on the document or encoded into the document; and
wherein the watermark data embedded in the first image and the copy is related in a manner that enables validity of the document to be verified.
6 Assignments
0 Petitions
Accused Products
Abstract
Digital watermark methods for encoding auxiliary data into a host signal are used to authenticate physical and electronic objects. In one implementation, an identification document includes electronic circuitry. The electronic circuitry includes an image of an authorized bearer of the identification document. The image includes first digital watermarking having a plural-bit identifier. In some cases, the identification document includes a printed image of the authorized bearer of the identification document. The printed image includes second digital watermarking therein. The first digital watermarking and the second digital watermarking can be cross-correlated for authentication of the identification document.
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Citations
29 Claims
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1. An identification document including:
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a first image embedded with watermark data and printed on the document;
wherein a copy of the first image is embedded with watermark data, and is referenced on the document or encoded into the document; and
wherein the watermark data embedded in the first image and the copy is related in a manner that enables validity of the document to be verified. - View Dependent Claims (2, 3, 4, 5, 6)
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7. An identification document comprising:
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a first image of an authorized bearer of the identification document, wherein the first image comprises first steganographic encoding therein; and
electronic or integrated circuitry, wherein the electronic or integrated circuitry comprises a second image of the authorized bearer of the identification document stored therein, wherein the second image comprises second steganographic encoding, and wherein the second encoding comprises a plural-bit identifier. - View Dependent Claims (8, 9, 10, 11, 12, 13, 14, 29)
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15. An identification document comprising:
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a first image of an authorized bearer of the identification document provided on a document surface; and
a storage device carried by the document, wherein the storage device comprises a second image of the authorized bearer of the identification document stored therein, wherein the second image comprises first steganographic encoding, and wherein the first encoding comprises a plural-bit identifier. - View Dependent Claims (16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28)
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Specification