Do you dare to take the One Ring into your possession? Will you try to use its powers and fall to evil or walk into Mordor to ...

The first factor comes via biometric reading, in this case a fingerprint scan via a sensor on the inside of the ring. Token has a sensor inside that identifies when you're wearing it after activation.

Using just the ring, you can pay for goods, unlock your car, or ride the subway. The Token ring starts at $249 and is now available for presale. The first Token rings will start shipping in December.