Abstract: A user interface is presented to a user via a computer system such as a tablet computer and enables users to create relations between selected products or services, such as those related to home automation. The graphical user interface (GUI) features a display that is analogous to that of a slot machine, with a touch-enabled screen that is operated with the user's fingers. The display icons of the GUI, arranged in rolls as on a slot machine's display, are representative of the products or services. The GUI presents the rolls of icons to the user, enabling the user to select an item in each roll and to define relations among the corresponding products or services. In this way, a sensor device associated with a first product/service can be linked to an actor device associated with a second product/service, so that the two devices are capable of telecommunicating with each other.