19. A method of controlling access of a speaker to one of a service and a facility from among a multiplicity of speaker candidates, the method comprising the steps of: (a) receiving first spoken utterances of the speaker, the first spoken utterances containing indicia of the speaker; (b) decoding the first spoken utterances; (c) generating a sub-list of speaker candidates that substantially match the speakers decoded spoken utterances; (d) activating databases respectively corresponding to the speaker candidates in the sub-list, the databases containing information respectively attributable to the speaker candidates; (e) performing a voice classification analysis on voice characteristics of the speaker; (f) eliminating speaker candidates who do not substantially match these characteristics; (g) querying the speaker with at least one question that is relevant to the information in the databases of speaker candidates remaining after the step (f); (h) further eliminating speaker candidates based on the accuracy of the answer provided by the speaker in response to the at least one question; (i) further performing the voice classification analysis on the voice characteristics from the answer provided by the speaker; (j) still further eliminating speaker candidates who do not substantially match these characteristics; and (k) iteratively repeating steps (g) through (j) until one of one speaker candidate and no speaker candidates remain, if one speaker candidate remains then permitting the speaker access and if no speaker candidate remains then denying the speaker access.
25. The method of claim 19, wherein at least a portion of the information contained in the database is derived from decoded spoken utterances provided by the speaker.