下载 PilferShush Jammer - v4.5.0

请下载并共享PilferShush Jammer - v4.5.0，它是类别工具中的特色应用之一。
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PilferShush Jammer - v4.5.0发布，PilferShush Jammer - v4.5.0是当今最好的免费和最佳手机应用程序之一。位于应用商店的工具类别中。

PilferShush Jammer - v4.5.0的最低操作系统为Android 4.3+及更高版本。因此，如果尚未升级手机，则必须更新。

在APKDroid上，您将免费下载PilferShush Jammer - v4.5.0 APK，最新版本为4.5.0，发布日期为2020-10-10，文件大小为2.7 MB。根据Google Play商店的统计数据，大约有1000次下载。您可以根据需要更新在Android上单独下载或安装的应用。还可以更新您的应用。您可以使用最新功能并提高安全性和应用程序的稳定性。现在就享受它

PilferShush Jammer blocks other apps attempting to utilise the microphone without your knowledge. Some apps use hidden processes to record tracking audio in the background that is either generated by nearby beacons, television commercials, streamed music services or websites. This tracking audio is transmitted between 18 kHz and 22 kHz (near ultra high frequency) which is beyond the range of typical human hearing but within the recording range of a typical Android phone.

To block unwanted use of the microphone by hidden app processes, PilferShush Jammer requests use of the hardware microphone from the Android system and holds it. This technique locks up the microphone from any other apps attempting to gain access to it. This technique has been tested only on user apps, not system apps. The Android system should halt PilferShush Jammer from blocking the microphone whenever a phone call is received or made.

When the jamming technique is running and the microphone is locked up, PilferShush Jammer posts a notification to keep the user informed that it is running. Tests have shown that it uses 0% CPU, 0% network and 43.6mb RAM when running for over an hour.

This is an experimental app made as part of research into audio counter-surveillance methods within the Android and IoT world.

It requires RECORD_AUDIO permission so that it may access and lock up the microphone.

It does NOT record or listen to any audio.
It does NOT connect to the internet.

Version 2.0 Active Jammer addition:

Tones can be emitted with a carrier frequency and a drift limit with rate all constrained to NUHF of 18 kHz to 24 kHz depending on the device capabilities. For instance 20000 Hz carrier, drift limit 1000 Hz and rate slow - will output random frequency between 19 kHz and 21 kHz approximately every second.

Version 3.0 Jammers run as a service:

Both the active and passive jammers now run as a (foreground) service that should accurately indicate whether they are running or not. This is dependent on both the Android OS (power management) and any App Managers that may destroy running services.

As this app seeks to block microphone use it is important to NOT dismiss or hide the notification otherwise you may forget it is running.

Also includes a scanner to check user installed apps for NUHF and Audio Content Recognition (ACR) SDKs as well as any services or receivers.

Version 4.0 Redesign
Major overhaul of the design to make information clearer and to simplify typical uses of the app

Notes:
The next release will investigate removing the audible artifacts (popping and clicking) present during the active jamming tones.

White noise output may not be very effective at blocking and is a somewhat annoying sound.

The speaker output may not have enough amplitude to block unwanted NUHF signals - testing will determine.


Source code is available here: https://github.com/kaputnikGo/PilferShushJammer
Research and Project webpage : https://www.cityfreqs.com.au/pilfer.php

- added passive control appwidget for Android 11- add boot receiver- updates to Spanish translation- microphone info- API check for requestAudioFocus check method- Inspector Fragment has mic info check print- remove Color.Accent resource need- add ActiveJammer shadow method- removed click artifacts from NUHF tone active jamming- add sine/sqr/saw waveforms- config optional AudioFX equaliser to NUHF preset