Wi-Fi signals can identify you through walls and even track your movements. Few people would disagree that Wi-Fi has become an indispensable part of modern-day life in our homes and offices.<\/p>\n\n\n\n
But as Wi-Fi networks have proliferated, researchers have discovered that the radio signals they emit can be used for purposes far beyond internet connectivity. The unique characteristics of how Wi-Fi signals interact with the human body mean that sophisticated analysis of these signals can reveal a surprising amount of personal information.<\/p>\n\n\n\n
Every device that connects to a Wi-Fi network broadcasts a unique identifier known as a MAC address. Even when not actively connected to a network, many smartphones and laptops send out probe requests \u2013 essentially asking nearby networks “are you there?” \u2013 which can be logged by anyone operating a wireless receiver in the area.<\/p>\n\n\n\n
More recently, researchers have demonstrated that by analysing how Wi-Fi signals bounce off human bodies, it is possible to detect movement, recognise individuals, and even infer activities such as walking, sitting, or exercising \u2013 all without the target being aware.<\/p>\n\n\n\n
For businesses, the implications are significant. A robust network security strategy \u2013 including segmented Wi-Fi networks, regular security audits, and managed firewall solutions \u2013 can help mitigate the risks. HPN’s Hosted Firewall and Managed Internet Access solutions are designed with exactly these concerns in mind.<\/p>\n\n\n\n