A system may include zones associated with respective seating positions of a vehicle and in-vehicle components each associated with at least one of the zones. An in-vehicle component may identify a personal device associated with the zone of the in-vehicle component by identifying a personal device associated with the zone of the in-vehicle component by determining average signal strength between the personal device and the in-vehicle components of each zone, and identifying for which zone the average signal strength is highest, and sending a notification to the personal device responsive to a detected user interaction. A method may include detecting user interaction to an in-vehicle component of a zone; acquiring signal strength intensity information of personal devices from other in-vehicle components of the zone; calculating average signal strengths of the personal devices to the in-vehicle components; associating one of the personal devices to the zone as having a highest average signal strength to the in-vehicle components of the zone; and sending a notification to the one of the personal devices.