{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-8543823","patent":{"patent_number":"US-8543823","title":"Digital watermarking for identification documents","assignee":null,"inventors":[],"filing_date":"2003-10-14T00:00:00.000Z","publication_date":"2013-09-24T00:00:00.000Z","cpc_codes":["G06F","G06F"],"num_claims":28,"abstract":"A watermark-based age verification system is provided in one implementation. The verification system may also verify a biometric template against a biometric sample. Shelf-life identification documents are provided in another implementation. Another aspect of the present invention analyzes image data to identify a face region or silhouette associated with a human subject depicted in the image data. The image data is adjusted, e.g., to center or align a face region within an image frame. A digital watermark is embedded after realignment. Another aspect authenticates or handles digital images that are captured at a first location and transferred to a second location via watermarking. In another implementation, first machine-readable code on an identification document layer is cross-correlated with second machine-readable code on the identification document. The first and second machine-readable codes are preferably sensed though different means, but can be cross-correlated to determine authenticity of an identification document."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Digital watermarking for identification documents","description":"A watermark-based age verification system is provided in one implementation. The verification system may also verify a biometric template against a biometric sample. Shelf-life identification document","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-8543823","license":"CC-BY-4.0-like","license_terms":"AI-generated analysis on this page (summary, layman_explanation, technical_analysis, business_analysis, faqs) may be reused with attribution and a visible link back to the canonical URL above. Patent abstracts, claims, and bibliographic data are USPTO public domain.","required_link":"https://patentable.app/patents/US-8543823","citation_suggestion":"Patentable. \"Digital watermarking for identification documents\" (US-8543823). https://patentable.app/patents/US-8543823","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-8543823","json":"https://patentable.app/api/llm-context/US-8543823","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-05-31T08:00:06.782Z"}