Researchers develop audio interception method and tactile drone sensors

Researchers have developed a new method to intercept audio from headphones at distances of up to 30 meters. Dubbed ‘InjectEave’, the attack was demonstrated by teams from the Hong Kong University of Science and Technology and Hong Kong Polytechnic University. Unlike traditional digital interception, this method exploits analog components—such as amplifiers and transistors—by transmitting an electromagnetic signal (0-9 MHz) that causes the device to modulate audio onto a detectable emission. This allows the signal to pass through walls and bypass standard encryption. The technique was tested on several commercial products, including Apple AirPods, Sony ZX110AP, and various smart home devices.

In a separate development, researchers at Delft University of Technology have created lightweight, tactile ‘whisker’ sensors to assist small drones in navigating hostile or low-visibility environments. Inspired by the vibrissae used by small mammals, these sensors allow drones weighing under 100 grams to navigate through darkness, dust, or smoke by touch. The system uses miniature pressure sensors attached to whiskers to help the drone estimate depth, avoid obstacles, and map surroundings when traditional sensors like LiDAR or cameras fail.