search

kaputnikGo / PilferShushJammer

Light Android AOSP application to test microphone jamming techniques to combat Cross-Device Tracking (XDT)
219 stars 25 forks source link

Passive Mode on Phone's Startup #4

Closed PedroBarcha closed 6 years ago

PedroBarcha commented 6 years ago

Currently, is there a way to make PilferShush initialize its passive mode on the phone's startup?

kaputnikGo commented 6 years ago

No. I think that should be a user choice as the passive technique of grabbing the microphone and holding it is intended to block other user apps from accessing it. This is something that should not be relied upon for long periods of time as it is not really a "fix" but a brute response used to demonstrate an existing problem with Android phones - you cannot really be certain that any given app with the required permissions is not using the microphone to record audio from a background process.

The technique doesn't use any extra CPU cycles as there is no audio buffer copying. But i cannot test its behaviour with VoIP apps for instance, so your results may vary.

Future versions may include a background scanner that goes through the user app list and checks for services, receivers, boot start, record audio abilities and known NUHF beacon SDKs. This may help in determining whether your phone needs the jammer.