Your WiFi Could Betray Your Passwords, Pins & Keystrokes

The way user moves his fingers across a phone's touchscreen alters the WiFi signals transmitted by a mobile phone, causing interruptions that an attacker can intercept, analyze, and reverse engineer to guess what the user has typed on his phone or in password input fields.

This type of attack, nicknamed WindTalker, is only possible when the attacker controls a rogue WiFi access point to collect WiFi signal disturbances .

The Details of the attack is explained in following Video & in the Research paper CSI Meets Public WiFi: Inferring Your Mobile Phone Password via WiFi Signals."