Gyrophone — MEMS IMU Acoustic Eavesdropping: Gyroscope + Accelerometer Captures Speech Without Microphone Permission

Zero-permission phone IMU captures speech vibrations from ear speaker through motherboard PCB. Gyrophone (2014): MEMS gyro captures 0–200 Hz, EarSpy: 98.6% gender + 92.6% speaker ID, AccEar cGAN reconstructs intelligible speech, InertiEAR sensor fusion beats rate limiting, STAG temporal misalignment doubles effective sample rate to 400 Hz. No microphone, no permission request, no visible indicator — works on Android and iOS.

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If any of this frightens you: this site documents what signal physics makes possible in a laboratory, which is not evidence about what is happening to any individual. If you feel watched, targeted or unsafe, that distress is real and treatable. Read about paranoia, mental health and how to get help, or call a free 24/7 line — 988 in the US and Canada, 116 123 in the UK and Norway, 13 11 14 in Australia, or find your country at findahelpline.com.