Researchers at the University of Maryland have written a paper that warns Apple's Wi-Fi Positioning System (WPS) could be used to track groups of people and even individuals, while military assets could also be traced.
"This work identifies the potential for harm to befall owners of Wi-Fi APs (access points), particularly those among vulnerable and sensitive populations, that can be tracked using WPSes," the paper warns. What's more, this can also affect people who don't own Apple devices — simply having an Apple device come within transmission range is enough.
