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- Usability: ease-of-use consistent with typical commercial online transactions such as consumer banking or personal investor securities tradingImplementabilty: neither agency or user should have to take heroic measures; for example, portable e-signature capability, not tied to a particular Internet access device or particular type of access device (rules out a signature digitizing pad, fingerprint reader, etc.)
- Ease of Implementation: minimize modifications to agency business rules or technology infrastructure
- Affordability: cost appropriate for business value delivered
- Risk Mitigation: accountability appropriate to mitigate business risk - which is a function of confidence in the original identity assertion (was the registrant who they claimed to be?), the chain of custody of the identity credentials (did the registrant maintain sole custody of the secret key), the integrity of the signed document (is the document in evidence exactly the same document that was signed?), and the legal framework of the e-signature (is the signature legally binding?).
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