Abstract: A system for authorizing user access to a secure site includes a memory unit, first and second input devices, and first and second processing devices. The memory unit stores voice prints and identities of the set of individuals that have access to the secure site. The first input device is for inputting information that identifies the user as a member of the set. The second input device is for inputting temporary user voice data. The first processing device is for generating a temporary voice print from the temporary data. The second processing device is for comparing the temporary voice print to the stored voice prints. Access is granted only if the temporary voice print is most similar to the voice print of the individual that the user claims to be.