How should we choose between a public key cryptography (PKC) system and a signature dynamics system?
PKC signatures have a greater degree of verifiability than signature dynamics signatures. PKC allows for a third party verification of the signature, while signature dynamics signatures require additional steps (including handwriting analysis) to verify the signer of a document. PKC signatures are designed to be immediately verifiable. Signatures using signature dynamics technology are designed to allow future verification of the signature (similar to a non-notarized, paper-based signature). PKC signatures are affixed to documents using software enhancements to existing applications and web browsers. Signature dynamics signatures require additional hardware to create the signatures. Signature dynamics signatures are easier for the average user to understand, but they do not provide the level of security that is inherent in PKC signatures, which are immediately verifiable with a third-party issued certificate. Public entities should conduct an extensive review of their needs and match t
