Voice as a password security plan/ control

Now, I design a project about voice password, i want a security plan/ control to protect and prevent system from threats, such as firework, how to implete in a project , how to control and protct system. I hope you have a good details on project. A plan which details the highest critical risks and method to address it with a structured approach. A list of all controls required and mentioned in the security plan to protect and prevent the system from threats or failure.