How many samples? All you need to do is wait until they tell you who they are by associating that MAC addr with a hotspot. Share "anonymous" data with vendors

How many samples? All you need to do is wait until they tell you who they are by associating that MAC addr with a hotspot. Share "anonymous" data with vendors who provide wifi access, and suddenly Sephora knows where you live and where you work and can remind you that you're almost out of La Prairie Crème Cellulaire Platine Rare when you bin your cup of coffee outside the office.