Abstract: Remote identity proofing is the process of uniquely verifying an individual who is a party to an online transaction. This presents an enormous challenge to the secure delivery of government services as well as online commerce. The degree of difficulty is compounded when attempting to remotely authenticate for the first time a previously unknown individual. The High Assurance Remote Identity Proofing method introduces a holistic approach to solving this problem. A rich collection of identity data, when evaluated by multiple verification methods, can be aggregated to an identity assurance score, which is a measure of the uniqueness and authenticity of a claimed identity and ultimately provides a high assurance that someone attempting to remotely verify his or her identity is who he or she claims to be.