&gt; That&#x27;s the easy part. If previous contact hasn&#x27;t taken place, persistence is irrelevant. A periodically-changing ID would do.<p>Okay. How would <i>you</i> design a system to permit associated or unassociated stations to <i>passively</i> determine whether or not they were in range of a given AP? Remember that human-friendly names for a given AP are almost certain to collide.