Patent Document ID: 10146923
Application ID: 15559793
Patent Status: 1

Claim One:
1. An electronic system for authenticating a user of an electronic service, said system comprising: at least one server apparatus; and a hardware processor configured to store, for a number of users, a plurality of personal voiceprints each of which being linked with a dedicated visual, audiovisual or audio cue, for challenge-response authentication of the users, wherein the cues are user-selected, user-provided or user-created, pick, upon receipt of an authentication request associated with a claim of an identity of an existing user of said number of users, a subset of cues for which there are voiceprints of the existing user stored, and provide the cues for representation to the user as a challenge, receive sound data incorporating a contact microphone signal, comprising a throat microphone signal, in addition to a mouth microphone signal, comprising a close-speaking microphone signal, the sound data being indicative of voice response uttered by the user to the represented cues, determine on the basis of the sound data, the represented cues and voiceprints linked therewith and the existing user, whether the response has been uttered by the existing user of said number of users, wherein the sound data indicative of the voice responses uttered to the represented cues are matched as concatenated against a concatenated voiceprint established based on the voiceprints linked with the represented cues and the existing user, and provided that this is the case, elevate the authentication status of the user as the existing user, regarding at least the current communication session wherein the hardware processor is further configured to utilize, based on the obtained data indicative of the location of the user, the estimated location of the user as an authentication factor.