US Patent 10318718 Voice authentication within messaging systems

A user is initially trained for voice authentication within a messaging platform session. After training and during the same session or a different session with the messaging platform session or with a different messaging platform, and when the user requests during such session a sensitive operation be performed on behalf of the user with an external service, a randomly generated voice challenge is delivered to the user during that session. If a returned voice recording from the user is authenticated in response to the issued voice challenge, then the sensitive operation is performed on behalf of the user during the session.