Unlocking device with Fingerprints are Passé

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Nymi is a wearable device that uses the unique pattern of heartbeat to authenticate your identity to multiple devices.

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Open Sesame

the concept of wearable NFC or RFID device applied to public transportation: instead of fishing a farecard out of a wallet, pocket, or bag, a user simply swipes their ring at a turnstile and refills it either online or at a vending machine.