A Monitors Ultrasonic Sounds Can Reveal Whats on the Screen

Published: Aug. 24, 2018, 4:31 p.m.

You probably assume that someone can only see what's on your computer screen by looking at it. But a team of researchers has found that they can glean a surprising amount of information about what a monitor displays by listening to and analyzing the unintended, ultrasonic sounds it emits.