A voice signature system includes a data store, an interface code segment operable to receive identification of information to be signed and a phone number, and a signature process code segment operable to place an outbound telephone call to the phone number and capture a voice recording. The voice signature system is operable to create a voice signature using the voice recording and the identification of information to be signed. A method for creating voice signatures includes receiving an identification of information to be signed, receiving a phone number, placing an outbound call to the phone number, creating a voice recording of at least a portion of the outbound call, and creating a voice signature using the identification of information to be signed and the voice recording.