How Android phone’s accelerometer can be used to listen to your phone calls

If you do not allow an application to access your microphone, it does not mean that it cannot hear your voice. Researchers have created an attack called Spearphone. This attack can listen to phone calls and conversations with your Google Assistant using Android phone’s motion sensors. When an app asks for permission to access the phone’s mic during installation, it can listen to your chat.


However, researchers have explored another way. Newer smartphones have accelerometers that show how fast you are moving. Accelerometers are quite useful for Fit-Ness apps. Since Android apps do not require any permission to use the Accelerometer, experts have used it for spying.

Smartphone’s loudspeakers are the only ones that consolidate the body of the device. They are also able to hijack the accelerometer to take vibration samples.

Experts combine vibration signals and machine learning in their attack to transform vibration patterns into speech conversations. This method works even when the phone is placed on the table and is still useful when the phone is in the hands of the user. Yes.


This method works as long as the phone’s loudspeaker is working. Other users’ responses to the phone call can track what you say.
Motion censor sampling rates (the frequency at which data is read) are still low, but experts have obtained even better results. From

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