Is this "free" Wi-fi used to track the physical location of wifi enabled phones, like many other public wifi networks? Will Australian police need warrants to

Is this "free" Wi-fi used to track the physical location of wifi enabled phones, like many other public wifi networks? Will Australian police need warrants to query this network for location data? Can the NSA access the location data from this network through the 5 eyes network? "The model works by providing free access in exchange for users’ personal and behavioral data, which are then used to target ads to them." http://theconversation.com/the-heavy-price-we-pay-for-free-wi-fi-52412 http://theconversation.com/the-heavy-price-we-pay-for-free-w...