FMD vs PilferShush Jammer
Side-by-side comparison of two open source alternatives
FMD
I lost my new phone. And because I don't use Google Services I couldn't locate it and my phone was gone for good. In the hope that this doesn't happen again, I developed this application, so that I can locate the phone via SMS. Features: - Locate the device (using GPS or cellular location) - Lock the device - Let the device ring - Take pictures with the device's camera to see its surroundings - Factory-reset the device Usage: You can control FMD (and thus your phone) either via SMS or via FMD Server. You send a command to the phone (e.g. "fmd ring") and the phone executes it. For SMS you can either define a list of trusted contacts (phone numbers) that are allowed to send commands. Or you can set a PIN to allow anonymous usage. Then non-trusted phone numbers can also send commands by including the PIN in the message. This is useful because now if you lose your phone, you can ask a random person for help to wipe your phone remotely. If you simply text "fmd" to your phone FMD will reply with a text listing the available commands. With FMD Server you get a web interface to send commands, to view the location of your device on a map, and to view pictures taken by the device. You can self-host FMD Server. For more details, see: https://gitlab.com/fmd-foss/fmd-server Disclaimer: This app is provided on a best effort basis. We hope it is useful, we use it ourselves, but this is a hobby project and we can't guarantee that it will work when you need it the most.
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 | FMD | PilferShush Jammer |
|---|---|---|
| License | GPL-3.0-only | Apache-2.0 |
| Install sources | F-Droid | F-Droid |
| Categories | Password ManagerProductivityNavigation | Password ManagerProductivity |
| Features | Ad-FreeOpen SourceNo Tracking | Ad-FreeOpen SourceNo Tracking |
| Platforms | Android | Android |
| Website | ||
| Source code |