Spies can eavesdrop on phone calls by sensing vibrations with radar

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

​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 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