If you are fully connected to Airbnb (have availability syncing enabled) Host Tools uses the last four digits of the guest's phone number for their door code.

If you do not have a full connection (you do not have availability syncing enabled) then we randomly generate codes.

To avoid confusion, I would not mention that a code is connected to the guest's phone number in your message. This is what we have in our automated message:

KEY: There is a keypad attached to the front door. Your access code is {{Guest Lock Code}}, followed by the checkmark on the keypad. Please note that this code is not active until your scheduled check-in time. To lock the door when you leave just press any number.

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