L' INTELLIGENCE CYBER par Jean-Paul Pinte

Researchers have devised a system that can recognize a user’s keystrokes by exploiting available WiFi signals.

The research team, which is made up of computer scientists from Michigan State University and Nanjing University in China, explain in their paper (PDF) that their « WiKey » system works because most WiFi devices (including routers) come with multiple-input and multiple-output (MIMO) capabilities:

http://www.bleepingcomputer.com/news/security/researchers-devise-method-to-monitor-your-keystrokes-using-wifi-signals/