Graphometric Document Signing with Biometric Identity Verification
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Solution Overview
Problem
Current methods for digitizing handwritten signatures on documents lack non-repudiability and fail to ensure the identity of the signatory, as they require printing and scanning, which can invalidate the signature and do not effectively verify the signatory's identity in subsequent operations.
Innovation Solution
A method and system for graphometric signature that authenticates the signatory using a dynamic graphometric signature acquisition device and face recognition, encrypts the document, and associates pre-stored features with biometric identifiers to guarantee the identity and non-repudiability of the signature, allowing secure electronic document management without the need for physical printing or scanning.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If printing and scanning is used to digitize handwritten signatures, then documents can be processed electronically, but the non-repudiability of the signature is lost and the identity of the signatory cannot be verified
Solution Approach 1:
The patent replaces the mechanical scanning process with a direct electronic graphometric capture system that records signature dynamics (pressure, speed, trajectory) while simultaneously capturing biometric data (face recognition, fingerprint) to ensure both electronic processability and cryptographic non-repudiability
Solution Approach 2:
The patent transforms the static scanned image into dynamic graphometric data comprising multiple parameters (pressure, speed, position, time) that are cryptographically hashed and linked to biometric identifiers, creating an irreversible electronic record that maintains non-repudiability
2Reliability
If digital signature based on public-key cryptography is used, then non-repudiability is guaranteed, but the authentication of the actual signatory identity is not ensured
Solution Approach 1:
The patent merges cryptographic digital signature mechanisms with biometric authentication systems, combining the non-repudiability of public-key cryptography with the identity verification capability of biometrics (face recognition, fingerprint, eye tracking) to achieve both goals simultaneously
Solution Approach 2:
The patent introduces biometric identifiers as an intermediary layer between the signatory and the cryptographic signature, creating a chain of trust where the biometric verification ensures the person claiming to sign is indeed the authorized signatory before the cryptographic signature is applied
3Productivity
If smart card with asymmetric key is used for electronic signature, then electronic document management is optimized, but the smart card can be used without actual consent of the owner
Solution Approach 1:
The patent implements real-time biometric verification feedback during the signature process, where the system continuously monitors and verifies the signatory's identity through multiple biometric modalities before and during the signature act, ensuring active consent and preventing unauthorized use
Solution Approach 2:
The patent replaces the static smart card authentication with dynamic multi-factor authentication that adapts to the signing context, incorporating real-time biometric verification, environmental sensors, and cryptographic challenges that change during the signing process to ensure genuine consent
4Quantity of substance
If scanning is performed after signature affixation, then documents can be digitized, but subsequent processing and integration cannot be carried out
Solution Approach 1:
The patent performs all signature capture, biometric verification, and cryptographic processing actions in advance before the document is finalized, creating a ready-to-process electronic package that includes the signature, biometric data, cryptographic hashes, and metadata, enabling immediate subsequent processing and integration
Data Source
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AI summary
The present invention relates to a method for graphometric signature of documents comprising a step of authenticating the graphometric signature of the signatory comprising the steps of acquiring the graphometric signature of the signatory, identifying one or more actual features of the graphometric signature, comparing the actual features with the pre-stored features of the graphometric signature and a step of authenticating the identity of the signatory comprises the steps of real-time acquiring the actual face recognition identifiers of said signatory, comparing the actual face recognition identifiers with pre-stored face recognition identifiers. The step of affixing the graphometric signature is performed if in the step of comparing the step of authenticating the graphometric signature, the actual features correspond to said pre-stored features of the signatory, and if in the step of comparing the identity authentication step, the actual face recognition identifiers correspond to the pre-stored face recognition identifiers of the signatory.