Nomi[0] is one startup that does this, tracking locations of customers across participating stores without customers' consent. It's opt-out for consumers, and

Nomi[0] is one startup that does this, tracking locations of customers across participating stores without customers' consent. It's opt-out for consumers, and in order to opt-out, you must register your MAC address with them[1][2]. I really hope that cycling MAC addresses becomes easier on mobile devices, if not automatic. [0] http://nomi.com http://nomi.com [1] http://nomi.com/privacy/ http://nomi.com/privacy/ [2] Assuming you even know that this service exists (which most consumers don't, because why would the store owner tell them that they're doing this?)