US Patent 7716055 Apparatus and method for verifying transactions using voice print

A verification system for verifying that a consumer seeking to conduct a transaction with a merchant using an account is authorized to use the account. A voice response unit records a voice print of the customer, e.g. when the account is established, and associates the voice print with the customer account. In a subsequent transaction, such as where a customer changes telecommunications provider, the customer voice print is used to verify that a voice approval given by the customer is in fact from the customer.