Starwood, which started testing keyless entry at Aloft hotels in New York's Harlem neighborhood and Cupertino, Calif., earlier this year, officially went live with the feature at those two properties as well as a handful of other hotels. Those properties include Aloft hotels in Beijing and Cancun; W hotels in Hollywood, New York (downtown), Hong Kong, Singapore and Qatar; and at New York’s Element Times Square. The feature is available to Starwood Preferred Guest members who register their iPhone or Android phones through the SPG App. Once registered, guests are notified when their room is ready, and that they’re checked in. At that point, the guest can go to their room, open the SPG App and hold the phone about two or three inches away from the faceplate on the room’s door lock. Get the full story at Travel Weekly, Starwood, and Hilton Read also "Here’s why Starwood Hotels isn’t using Apple’s NFC chips for its iPhone room-key program" at VentureBeat