The Location has two concepts of users: “Super User” and “User.” The Super User refers to a user who creates the Location and is the one who manages this Location such as registering/editing/deleting cats and LavvieBot, inviting “User” to “Super User’s” locations, delegating the authority of Super User to one of the “Users” in that location, and deleting all the information of Locations. On the other hand, once “Users” are invited to the certain “Location”, they can receive information.