A project in the production of working prototype on an affordable smart digital door lock for houses to help people who are reckless and forgetful about their keys. The aim is to allow users to enjoy keyless conveniency. But, we are not just another door lock brand on the market. Keeping in mind that every user is unique, it is crucial to design a product that appeals to as many individuals as possible. As the old saying goes, if you strive to please everyone, you will please no one. Hence, instead of being generally suitable for the client, Knock allow users to customise their door lock to be specially perfect for every user.