Reliance authentication is a part of the trust-based identity attribution process whereby a second entity relies upon the authentication processes put in place by a first entity. The second entity creates a further element that is unique and specific to its purpose, that can only be retrieved or accessed by the authentication processes of the first entity having first being met.

A digital identity is data stored on computer systems relating to an individual, organization, application, or device. For individuals, it involves the collection of personal data that is essential for facilitating automated access to digital services, confirming one's identity on the internet, and allowing digital systems to manage interactions between different parties. It is a component of a person's social identity in the digital realm, often referred to as their online identity.