1. A method comprising: receiving, at a system comprising a processor, a request regarding a targeted area, the request being received from a requester; receiving, by the system, a device identifier associated with a wireless device located within the targeted area; determining, by the system, that a preference associated with the wireless device indicates that the device identifier is not to be shared; and sending, by the system and to the requester, a dummy identification that is a substitute for the device identifier.