To begin with, it is important to understand that the installation of your Nuki smart lock is done on the inside of your home, which means that from the outside it is not visible that you have a smart lock. Unlike a traditional key that can be lost or stolen, allowing an intruder to gain access to your home (if you haven't changed the lock), with a smart lock, if the associated phone is lost or stolen, you may have a security password enabled on the device. In addition, you can block access to your smart lock from the Nuki interface, either from a computer or from another phone. Finally, because your Nuki smart lock's communications are encrypted, it would be more difficult for an intruder to gain access to your home by hacking into the lock than by simply forcing a door or window.