METHOD AND SYSTEM FOR USER AUTHENTICATION

摘要

A system for providing a measure of confidence of identity of a user of an online system comprising an input for receiving data relating to a specified individual including address data indicating an address of the individual an image metadata retrieval unit arranged to retrieve metadata from an image metadata database related to a plurality of images of the geographical area in the vicinity of the address of the individual and also metadata related to images of a different geographical area an image selection unit arranged to select using the metadata one or more images representing the geographical area in the vicinity of the address and one or more images representing a different geographical area an image presentation unit arranged to present to the user the set of images representing the geographical area in the vicinity of the address and the images of a different geographical area an input arranged to receive data specifying a selection made by the user indicating which images relate to the geographical area in the vicinity of the address the individual; and an output arranged to assert the data specifying the selection made by the user to a confidence calculation unit to use this data to determine a measure of confidence that the user is the specified individual.