Even by now, you should already have a pretty good idea of how the "keyless" system works, but here's a more detailed rundown. First, you'll need to register your phone through a one-time setup and also allow push notifications. Twenty-four hours before your scheduled arrival, you'll be prompted to opt in to the keyless program, assuming you're staying at a hotel that offers it. You'll get a push notification when you're checked in and when the room is ready, allowing you to bypass the front desk. And, of course, the app knows which room you're in, so don't worry about that. Then, just make sure Bluetooth is enabled on your phone, open the Starwood Preferred Guest app, hold the phone to the door lock, wait for a solid green light and, voila, you're all set.
For the time being, at least, the tech is limited to 10 hotels in New York, LA, Beijing, Hong Kong and Doha, including the Aloft Beijing, Aloft Cancun, Aloft Cupertino, Aloft Harlem, W Doha, W Hollywood, W Hong Kong, W New York-Downtown, W Singapore and Element Times Square. From there, the company hopes to roll it out to 140 more locations by early 2015 (again, these are Aloft, Element and W hotels, specifically). If you get to try it out soon, let us know how it goes -- and take extra care not to leave your phone at the hotel bar.