This disclosure describes methods for identifying an individual in an anonymous biometric authentication system, where an individual’s biometric data is captured by a device, and the resulting probe is compared with the templates in a previously enrolled population. The tasks may be performed by a user or alternatively by a computer. The supporting plate is attached to the axle, whose projection or the axle itself is comprised of magnetically conductive material. It provides data that can be used as a means of product tracking, identification of counterfeit product and to prove ownership of stolen goods.