A control device executing a networking framework for controlling a network of smart objects registered with a framework may interact with only those smart objects in a room. A radio frequency signal broadcast on the networking framework for reception by smart objects registered with the networking framework may cause each of the plurality of smart objects to transmit an ultrasound signal that may include an identifier, such as a generic identifier of the smart object that was assigned during registration with the network framework. The control device may receive the ultrasound signals only from the smart objects in the room. The control device may rename each smart object from which ultrasound signals were received with new identifying information that may include a reference to the room. The device may then communicate with the smart objects via the networking framework using the new identifying information.