A user interface system may include a processor. The processor may perform operations including receiving a wireless signal from multiple wireless devices. The operations may also include determining a signal strength of each wireless signal from each of the multiple wireless devices based on a first set of properties associated with a respective wireless signal. Moreover, the operations may include determining a signal vector of each wireless signal from each of the multiple wireless devices based on a second set of properties associated with the respective wireless signal. Additionally, the operations may include determining a location for each of the multiple wireless devices based on the signal strength and the signal vector. Further, the operations may include pairing one of the multiple wireless devices to the user interface system based on the location for each of the plurality of wireless devices.