Radar (Find my Device)

Radar (Find My Device) is a native find-my-device app for Sailfish OS: see your device's last position on a map and control it remotely via MQTT or SMS — fully self-hosted, no Google or cloud account involved.

Features:

• Locate your device on an OpenStreetMap map (optional free Geoapify key needed for a zoomable map)
• Track other Sailfish OS devices on the same map (Radar app installed + same MQTT broker)
• Publish your device's GPS position via MQTT (optional — use your own or a free public broker)
• Remote commands, via MQTT and/or SMS:
  • RING / STOP_RING — ring the device for 60 seconds
  • LOCK — lock the device into the lock screen
  • GPS — report the current position (published via MQTT, or replied by SMS — SMS costs may apply)
  • CAMERA — take a photo (front or back camera) and upload it to your WebDAV folder
  • DELETE — wipe all user data and reboot (NOT a factory reset)
• Everything is opt-in: each command, MQTT, SMS and background tracking can be enabled/disabled individually in the settings
• Translations: EN, DE, SV

Security:

• This is not a spy app: every remote action — even a failed one — shows a notification on the device.
• All commands are disabled by default.
• MQTT commands require broker authentication plus a one-time HMAC token derived from your PIN.
• SMS commands are only accepted from whitelisted numbers and require a TOTP code (authenticator app on a second device) or a one-time backup code.

Tested on: Fairphone 4 (SFOS 5.0.0.62), Emulator (5.0.0.62, 5.1.0.11)

Links:

• Github: https://github.com/Dominik-h-hub/harbour-find-my-device
• Documentation: https://github.com/Dominik-h-hub/harbour-find-my-device/tree/main/docs