12. A non-transitory computer readable storage medium that stores a computer program that is executable by a computer to: receive a call from a party; prompt the party for information; capture verbal communication spoken by the party; create a voice model associated with the party, the voice model being created by processing the captured verbal communication spoken by the party; store the created voice model; verify the identity of the party; and update a previously stored voice model of the party, the previously stored voice model of the party having been registered during a previous call received from the party, wherein the creation of the voice model is imperceptible to the party.
12. A non-transitory computer readable storage medium that stores a computer program that is executable by a computer to: receive a call from a party; prompt the party for information; capture verbal communication spoken by the party; create a voice model associated with the party, the voice model being created by processing the captured verbal communication spoken by the party; store the created voice model; verify the identity of the party; and update a previously stored voice model of the party, the previously stored voice model of the party having been registered during a previous call received from the party, wherein the creation of the voice model is imperceptible to the party. 20. The non-transitory computer readable medium according to claim 12 , wherein the computer updates the previously stored voice model of the party by associating the created voice model of the party with the previously stored voice model of the party so that a future voice verification can be performed using both of the created voice model and the previously stored voice model of the party.