A process for granting or denying a user access to a system using biometrics is disclosed. The process includes receiving a unique identifier for the system, receiving a unique identifier associated with the user, and verifying that the user is authorized to access the system. A passcode is transmitted to the device in the possession of the user, and a speech sample of the user speaking the passcode is returned. One or more attributes of the speech sample is compared with one or more attributes that are expected to be in a speech sample. Access is granted or denied based upon a correlation between the file's actual attributes and the predicted attributes.