Abstract: A method, server processing system and computer readable medium for identity verification is disclosed. In one aspect, the server processing system is configured to: receive digitally signed data including rating data issued by a second server processing system in order for an entity to register for a service associated with the server processing system, the rating data is indicative of an identity verification rating for the entity; verify that the digitally signed data has been issued by the second server processing system; and use the identity verification rating to register the entity in the event that the rating data is successfully verified as being issued by the second server processing system.

Abstract: A method, system, server processing system and computer readable medium for authenticating a user attempting to access a secure environment is disclosed. In one aspect, the server processing system is configured to: receive an authentication request to authenticate the user attempting to access the secure environment; transfer, to the user or a user device associated with the user, an index corresponding to a selected key from a keymap; receive data indicative of a code which is based on the selected key presented by the user device and a personal identifier, and determine, using the code whether the user is authenticated. Advantageously, the server processing system never stores nor receives data directly indicative of the personal identifier such that no one else is able to determine the personal identifier, not even an employee of the secure environment which the user is attempting to access.