Looks like Royal Caribbean are joining WDW in using a Magic Band type product on their ships.
http://www.royalcaribbean.com/quantumoftheseas/technology/smart-check-in/?cid=sf4329656+sf4329656
RFID WOW BANDS
In addition to Royal Caribbean’s traditional SeaPass cards, Quantum of the Seas also features WOWbands. For a nominal fee, these ready‑to‑wear wristbands require just one tap, so you can quickly and efficiently navigate the ship and make onboard purchases, as well as access Royal iQ and staterooms.