Use an outdated card access system instead of a digital lock. At least a key would be more reliable than a card. Card was old and it broke in my pocket. He Tried to charge me $100 if I pay him direct when I rejected he threatened he will submit a claim for $250 through Airbnb and eventually submitted one for $200. The whole thing looked like a scam. Duplicated Airbnb validation process by asking for same personal information & driving license. I use Airbnb frequently and across the globe this is my first bad experience and first bad review.