PilferShush Jammer4.6.2

PilferShush Jammer blocks other applications from using an Android device’s onboard microphone by taking control of the audio input without listening to or recording its audio. In passive mode, it engages the microphone so that other applications cannot access it while the mode remains active. This mode uses 0% CPU and has no noticeable battery use. It is not intended to stay enabled permanently, since changes in audio focus, including those caused by voice over IP calls, can trigger switching behavior.

In active mode, the jammer emits tones in the NUHF range from 18 kHz to 24 kHz. Users can set the carrier frequency, drift limit, and emission rate; one example is a 20,000 Hz carrier with a 1,000 Hz drift limit and a slow sweep around 19,000 to 21,000 Hz. These tones may produce audible artifacts, while the experimental white-noise output may fail to block signals or become annoying.

Telephony interruptions can make the application stop and restart automatically, and this switching currently responds to changes in audio_focus_state. The device speaker may not generate enough amplitude to block unwanted NUHF signals, so effectiveness depends on testing the particular device.

It suits Android users concerned about microphone access or experimenting with audio jamming behavior. Version 4.6.2 runs on Android 5.0 and later, uses Universal architecture, and belongs to Security & Privacy. PilferShush Jammer is released under an open-source license.