Telephone transaction system

A telephone transaction support system includes a customer information registration unit for registering information regarding a customer in a database, the information being obtained in a conversation with the customer over a telephone, a feature analyzing unit for analyzing a feature of a voice corresponding to a predetermined word obtained in the conversation with the customer over the telephone, and a password information registration unit for registering information obtained by the feature analyzing unit as password information in the database, the password information corresponding to the customer in the database. The information regarding the customer for which a transaction over the telephone should be allowed and the password information for the customer can be registered over the telephone.