Patent attributes
A method includes (a) receiving an authentication request from a user seeking access to a protected resource, (b) in response, generating a set of one or more face images, each face image having a facial expression score for a particular emotion associated with that face image, the facial expression scores being specific to the user, (c) displaying each face image of the set to the user together with a request for the user to score that face image for the particular emotion associated with that face image, (d) in response, receiving a user score for that face image, (e) comparing the received user score for each face image of the set to the respective facial expression score for the particular emotion associated with that face image, yielding a set of results, and (f) selectively providing access to the protected resource in response to each of the results being affirmative.