By 2035 your voice will be 1 of 3 unique identifiers for you used in many official and commerce situations.
You will own the unique (1 in 700 billion) voice biometric and sonic stream as a copyright/patent and will have substantial federal penalties if used without permission.
Jaime, great question! It will be both a technology issue solved (using confirming biometrics as one example) and laws that will require you to 100% own your voice with rights and very hard penalties (25 years) if it is spoofed. This combo will assure it as a leading ID system.