@BradRubenstein @briankrebs im kinda surprised that people are surprised by this.
nobodhy remembers the whole 'skyhook' thing from before iphones had gps? because this is exactly how they used to triangulate phones before they had gps. basically industrial wardriving.
now they just have the phones do the wardriving for them.
@Viss @BradRubenstein Actually the researchers referenced the Skyhook work and have a section explaining how their stuff complements previous research.