Abstract
A method and apparatus identifies a caller as a user in a group of users. An enrollment process extracts a grammar of the user's password and a voiceprint of the user's password and name. A caller may identify himself as a user by speaking his name. The name is recognized and a number of users having a name most closely matching the name spoken is identified using voice recognition techniques. The caller then speaks his password and the grammar is identified that most closely matches the grammars of the passwords corresponding to the users identified from the spoken name. A voiceprint is extracted from the name and grammar spoken by the caller, and if the voiceprint matches the voiceprint extracted for the user identified using the grammar during that user's enrollment process, the caller is identified as that user.
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