Isn't that suppose to be illegal in first place? I mean without actual consent, tracking a device... Doesn't sound extremely ethical. That said in some airport

Isn't that suppose to be illegal in first place? I mean without actual consent, tracking a device... Doesn't sound extremely ethical. That said in some airports, changing MAC address is illegal. Now that the iPhone will support the feature and most owners will have no idea what's happening, I guess these airports will have to change policy :-)