No one likes waiting in a long line at a hotel check-in counter, especially after a long flight and the stress that comes with it. Starting next year at Hilton hotels, however, you’ll be able to skip those lines entirely and get into your room with nothing more than your smartphone. Hilton recently announced that it will start rolling out new a new type of door lock next year, and will finish the global rollout to its 4,200 locations by the end of 2016. The new program bypasses the need for a room key by sending a code to your phone that you use to unlock your door. The technology is similar to what other hotel chains are doing – Starwood announced a similar program earlier this year – but Hilton is by far the biggest hotel chain to offer the feature to date. Hilton’s mobile app already lets pre-order amenities for your room and lets you check in and check out, but this latest program will help make your hotel stay even more relaxing.