[johnnycab]

Once such compromise is PilferShush Jammer for Android/Windows. There might be a similar iOS version, but I haven't found one yet.

Android. Also on Play Store. https://github.com/kaputnikGo/PilferShushJammer

Windows 10 app. https://appforwin10.com/pilfershush-jammer-app-for-windows-1...