Smartphones Might Replace Hotel Keys

Starwood Hotels and Resorts in New York City and Cupertino, California plan to make hotel room keys virtual. They plan to debut the app in about two or three months. The app will be compatible with recent iPhone models including the 4s and newer androids. By using Bluetooth you will be able to enter your room with a simple tap.

 http://www.cnn.com/2014/01/28/tech/mobile/smartphone-hotel-keys/index.html?c=mobile