Scientists use vibration detection to eavesdrop on smartphone conversations from up to 10 feet

Cell Phone (insta_photos/shutterstock.com)

Penn State researchers have shown that phone conversations can be intercepted from up to 10 feet away by detecting tiny vibrations in smartphones using radar technology.

The team used a millimeter-wave radar sensor—the same type found in self-driving cars and motion detectors—to capture vibrations from a phone's …