(Adam Fagen) Arriving at the door of your hotel room after a long day of traveling only to find that the key doesn’t work can be a frustrating experience. But that could be a situation of the past for guests at Hilton Hotels now that the company plans to rollout an initiative that would do away with flimsy, magnetic strip keys. Hilton is expected to announce this week a plan to implement a new technology that would allow guests at the companies’ 4,200 properties to enter their rooms with the use of their smartphones, The Wall Street Journal reports. While customers can already check in and out of the hotel chain via their phones, the new plan, which is part of an ongoing $550 million technology investment, will allow guests to see the location of and select their own rooms by phone at six Hilton brand hotels by the end of the summer. Officials say the subsequent phases of the initiative will begin to rollout over the next year, including the ability for guests to use their smartphones to unlock the doors to their rooms.