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Technique for recording and analyzing surface-acoustic waves can enable nearly any object to act as a touch input device

Help Net Security PrivacyMic: A smart home system that doesn’t record speech Microphones are perhaps the most common electronic sensor in the world, with an estimated 320 million listening for our commands in the world’s smart speakers. The trouble is that they’re capable of hearing everything else, too. But now, a team of University of Michigan researchers has developed a system that can inform a smart home – or listen for the signal that would turn on a smart speaker – without eavesdropping on audible sound. The key to the device, called PrivacyMic, is ultrasonic sound at frequenc...

New technology developed at U-M could prevent smart speakers from listening to our conversations.

PrivacyMic, the Smart Speaker That Doesn't Eavesdrop UM researchers developed a system that enables devices to understand what's happening in your home respond without listening to you. A prototype PrivacyMic. (📷: University of Michigan / YouTube) A team of University of Michigan researchers has developed a prototype system dedicated to privacy: a smart speaker that doesn't pick up or record audible sound but still informs a smart home or listens for the signal that would turn on a smart speaker. With an estimated 320 million microphones worldwide always listening to pick out our comma...

‘PrivacyMic’: For a smart speaker that doesn’t eavesdrop Microphones are perhaps the most common electronic sensor in the world, with an estimated 320 million listening for our commands in the world’s smart speakers. The trouble is that they’re capable of hearing everything else, too. But now, a team of University of Michigan researchers has developed a system that can inform a smart home—or listen for the signal that would turn on a smart speaker—without eavesdropping on audible sound. The key to the device, called PrivacyMic, is ultrasonic sound at frequencies above the range ...