I was concerned about staying in a vacation rental because previous guests could have made copies of the keys and then enter at a future time. It did not feel safe to me. Kate explained that she uses a sophisticated system of entering a code for the keypad lock. The exact date and even the hour that guests arrive and depart is entered into the keypad lock. That way the code expires when guests leave and previous guest cannot enter the house. I was very impressed with this feature. That made me be able to relax and enjoy my stay. The house was FANTASTIC with so many features, like indoor outdoor living as the living room walls to the patio collapse, 2 master bedrooms that are really far from each together, surround sound, Sleep Number beds, fireplace, BBQ, beach chairs and beach towels and a fully equipped kitchen. I am recommending this vacation house to my friends so they can have a great time and feel secure that they don’t have to worry about keys that were copied by previous renters.