Your iPhone is already an iPod, a phone, and an Internet connection device, and soon it'll be your room key at Hilton hotels. The company is launching a new service where iPhone owners can choose their room and check in, and next year they'll be able to use their smartphone as a room key, too.
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Remote room selection and check-in, plus the ability to use my iPhone as a room key? This is going to be awesome at trade shows and conferences -- assuming you can get an Internet connection.