IDEMIA Public Security has been granted a United States patent for a visible digital seal concept that binds a displayable element cryptographically to the underlying data of an identity document or credential. The patent, identified as US 12547748 B2, describes a tamper-detection mechanism in which the visible seal and the digitally signed document data can be compared to verify that neither has been altered after issuance.
The core concept involves a seal that is visible on the document – or as a digital overlay – and is also cryptographically tied to an owner and to the document’s signed data payload. Any modification to either the seal or the underlying data would be detectable through the verification process. The approach is intended to address forgery scenarios in which a document’s visible elements are altered while the digital record is left unchanged, or vice versa.
The technology is positioned as relevant to physical security printing and digital credential formats, both of which face increasing threats from AI-assisted forgery tools capable of producing high-quality counterfeit documents. A cryptographically bound seal that cannot be convincingly reproduced without access to the corresponding private key adds a layer of verification that goes beyond visual inspection.
The digital seal patent sits alongside IDEMIA partnering with Microsoft Entra Verified ID in IDEMIA’s broader push into secure digital identity ecosystems. Entra Verified ID, Microsoft’s verifiable credential product, represents a deployment context in which cryptographically authenticated document elements have a direct practical application. Integrating the visible seal with IDEMIA’s ARM64 smart credential minidriver, announced earlier this month, would extend tamper-resistant document capabilities to new hardware platforms.
IDEMIA Public Security has also been active in cross-border credential security programs. The IDEMIA Public Security and SAMI Advanced Electronics collaboration on smart mobility in Saudi Arabia is among the company’s recent partnerships demonstrating how cryptographically protected credentials are being applied in mobility and access management contexts outside the United States.
The patent’s issuance does not by itself indicate where or when IDEMIA intends to deploy the technology commercially. The company has not published a product announcement tied to the patent. IDEMIA Public Security’s existing focus areas—travel documents, driver licenses, national ID programs, and smart card credentials—all represent potential application domains for a visible digital seal system.
Full technical details of the patent’s claims are available through the USPTO Patent Public Search system using the patent number US 12547748 B2.
Source: USPTO Patent Public Search
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By Ji-seo Kim
