A central system in communication with the one or more applications is configured for storing an identifying information of a user. The identifying information includes a biometric identifying data. The central system is further configured for prompting the user for a confirmatory biometric data when the user accesses any of the one or more voice applications connected to the central system. The system compares the confirmatory biometric data with the biometric identifying data. The system authenticates the user if the confirmatory biometric data matches a portion of the biometric identifying data.