RF Sentinel icon
RF Sentinel icon

RF Sentinel

RF Sentinel (RFSentinel): free, open-source police detector app for Android. Spots police body cams, Flock ALPR cameras, AirTag trackers, Remote ID drones, smart glasses and fake cell towers from Bluetooth LE and WiFi. No root.

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  • Android
  • Android Tablet
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  •  71 Stars
  •  7 Forks
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RF Sentinel was added to AlternativeTo by CIS-C0 on and this page was last updated .

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What is RF Sentinel?

RF Sentinel is a passive, receive-only scanner for Android. It listens to Bluetooth LE, WiFi and cellular signals and flags police body cameras, Flock and other ALPR cameras, patrol-car equipment, Remote ID drones, AirTags and other trackers that follow you, camera glasses and signs of fake cell towers (IMSI catchers). Each match comes with a confidence score and the evidence behind it.

It shows OpenStreetMap speed, plate and red-light cameras with the direction they face, alerts by sound, vibration or speech, and works with Android Auto. Optional USB hardware adds monitor-mode WiFi adapters and RTL-SDR ADS-B aircraft tracking without root, and ESP32 boards running OUI-Spy, GhostESP or Marauder.

No root, no account, no analytics; data stays on the phone.