An off-the-shelf millimetre wave sensor can pick out the tiny vibrations made by a smartphone’s speaker, enabling an AI model to transcribe the conversation, even at a distance in a noisy room
source: https://www.newscientist.com/article/2453191-spies-can-eavesdrop-on-phone-calls-by-sensing-vibrations-with-radar/?utm_campaign=RSS%7CNSNS&utm_source=NSNS&utm_medium=RSS&utm_content=technology
