Uh oh! Public Wi-Fi routers can identify you even if you have no phone

Heres an unsettling development in this episode of everyday tech can do things you probably never imagined: in the future, anyone who regularly walks past a café or restaurant with public Wi-Fi could be identified-even without a smartphone in their pocket. Researchers at Karlsruhe Institute of Technology (KIT) have discovered that commercially available Wi-Fi routers can recognize and identify individual people based on signal changes. All thats required is for other devices in the vicinity to ...