Oblivion vs PilferShush Jammer
Side-by-side comparison of two open source alternatives
Oblivion
Oblivion is a security-focused Android application that allows a user to lock or wipe a device when compromise is suspected. The application is intended for high-risk situations such as device loss, forced unlock, or temporary loss of physical control. Trigger methods: * Panic button (Quick Settings tile) * Remote message containing a secret code * QR code based device identifier sharing * Automatic triggers * Trigger when the device has not been unlocked for a configurable period of time (including support for GrapheneOS) Actions: * Perform a factory reset (wipe) Device control is implemented using the Android Device Administration API. Security notes: * Only encrypted devices can guarantee that data cannot be recovered * The application does not function in Safe Mode * For baseline device hardening, see Sentry License Free and Open Source Software GPL-3.0
PilferShush Jammer
Features a passive jammer technique that engages the microphone thereby blocking other apps from using it. But does NOT listen to or record any of the audio from the microphone. It uses 0% CPU and no noticeable battery use. However is not intended to be left on permanently due to the variety of triggers that can cause audio_focus_state changes (VOIP etc). Also features an active jammer that emits tones constrained to the NUHF range of 18 kHz to 24 kHz range. User determined carrier frequency and drift limits with rate for random tone emissions 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. Audible artifacts are present during the NUHF tones but this may be changed in a future release. Experimental white noise output may not be very effective at blocking and is a somewhat annoying sound. The device speaker output may not have enough amplitude to block unwanted NUHF signals - testing will determine. * Manual start * Notification post when running * Auto stop and restart when telephony interrupts * Currently relies on audio_focus_state changes for auto-switching * Active jammer
| Feature | Oblivion | PilferShush Jammer |
|---|---|---|
| License | GPL-3.0-only | Apache-2.0 |
| Install sources | F-Droid | F-Droid |
| Categories | Password ManagerProductivity | Password ManagerProductivity |
| Features | Ad-FreeOpen SourceNo Tracking | Ad-FreeOpen SourceNo Tracking |
| Platforms | Android | Android |
| Website | ||
| Source code |