Special Publication 800-63-2, Electronic Authentication Guideline
NIST Special Publication (SP) 800-63 was released in 2006 to complement OMB Memorandum M-04-04. M-04-04 specifies four levels of assurance (LOA) that agencies must select from based on a detailed risk assessment of the potential harm that may come as a result of authentication failure. 800-63 specifically provides the technical and procedural requirements that agencies can implement to meet the LOA requirements of online services.
A More Secure Future of Online Transactions
A recent White House Executive Order (October, 2014), Improving the Security of Consumer Financial Transactions, calls for "all agencies making personal data accessible to citizens through digital applications" to "require the use of multiple factors of authentication and an effective identity proofing process." Working toward this Executive Order will ultimately enable citizens to better engage with federal agencies and will increase the security, privacy, and convenience of online transactions.