The boutique hotel brand from Starwood Hotels & Resorts Worldwide Inc. HOT +1.23% plans to offer this feature at two hotels, in the Harlem neighborhood and in Cupertino, Calif., before the end of the quarter. Guests at these properties will receive a message on a Starwood app containing a virtual key, which will unlock the door with a tap or twist of their phone through the use of Bluetooth technology. The company says the iPhone 4s or newer models and the Android phones running 4.3 or newer will be compatible. Starwood officials are hoping this will be one of the biggest technological changes in the industry since free Wi-Fi. "We believe this will become the new standard for how people will want to enter a hotel," says Frits van Paasschen, Starwood's CEO. "It may be a novelty at first, but we think it will become table stakes for managing a hotel." Not everyone is so sure. Past attempts to use technology to streamline the check-in process have had mixed results. Get the full story at The Wall Street Journal and Starwood