This depends on how you intend to use Alpha Night Manager. You would need to buy a digital key safe to use with the touchscreen computer. Basically there are three ways of using Alpha Night Manager in your hotel. Option 1: keep the rooms for check-in/ sales unlocked and use Alpha Night Manager to advise guests the room number. All instructions are left in the rooms. Option 2: keep the rooms for check-in / sales locked and leave instructions and keys in envelops which are kept in a digital key safe. Guests use Alpha Night Manager to find their room number and access code to open the key safe to get the envelops. Option 3: keep the rooms for check-in / sales locked by smart locks and use Alpha Night Manager to advise guests their room number and access codes to open the smart locks. We recommend option 2 which is a flexible and reasonably secure solution. If you choose this option, you will need to acquire a digital key safe which is readily available at the Bunnings or any other local hardware stores. If you need us to help source a digital key safe please let us know and we are more than happy to help you out. If you are still not sure about how you are going to use Alpha Night Manager, please contact us, and we will be very happy to give some suggestions.