Unless you’ve provided your neighbor the username and password of your Array account and they have physical access to the Array lock, they will be able to connect to your Array lock.
Your Array account is protected by a username and password. To connect a new network to the Array, a master reset must be completed. This means that the person would need to have access to the battery in the Array.
If you would like for your neighbor to have access to the Array, you can create an E-key for them.