Matter-ID Dignature™ is a digital signature solution that combines biometric verification with cryptographic techniques to authenticate electronic documents and transactions. The platform uses facial recognition and secret PIN codes to create a dual-factor authentication process that ties transactions to the physical identity of the signer. The solution is built on a Secure Digital Identity Suite that allows users to create digital twins of biometric documents. It employs Public Key Infrastructure (PKI) with additional biometric layers to provide authentication, integrity, and non-repudiation for digitally signed documents. The platform stores digital identities as cryptographically independent components and supports flexible cryptographic scheme management, allowing for integration of new cryptographic schemes and retirement of outdated ones. It implements zero-knowledge identity technology that enables users to create sub-identities that disclose minimal information while maintaining verifiable authenticity. Matter-ID uses established industry standards and cryptographic implementations to protect digital identities. The technology is designed to prevent identity theft and forgery through its decentralized approach to identity management and biometric binding.