Security researchers have discovered that Wi-Fi signals can be used to image environments and identify people with near 100 percent accuracy. Autorin | Oct 22, 2025 6:16 am PDT Here’s 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
