Could smartphone motion sensors be used by cybercriminals to record speech? It is a question that many academic and industry researchers are working to answer in order to ward off this kind of malicious use before it happens.
Recent studies suggest security flaws and sensitivities to low-frequency audio signals, such as human speech, in accelerometers and gyroscopes could allow cybercriminals to collect confidential information such as credit card numbers and Social Security numbers as users speak into or near a mobile device.
UAB says that while some studies have revealed the ability to use motion sensor data and algorithms to decipher passwords and PINs entered on touchscreens, researchers at the University of Alabama at Birmingham have found that motion sensors may pose a threat to speech privacy only in limited scenarios.
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