Yes, DJI drones can be detected quite easily by authorities using specialized monitoring systems. The most well-known is DJI AeroScope, a stationary or portable unit that intercepts the "Radio Frequency" (RF) signals transmitted between the drone and the remote controller. AeroScope can identify a drone's serial number, its real-time GPS coordinates, altitude, speed, and even the location of the pilot. While DJI officially discontinued the AeroScope system for general sale in 2023, it remains widely in use by law enforcement, airports, and security teams at major stadiums and power plants in 2026. Furthermore, under newer Remote ID regulations enforced in the U.S. and Europe, almost all modern DJI drones are required to broadcast their identification and location data via Wi-Fi or Bluetooth, which can be picked up by simple smartphone apps used by the public or police. While some "stealth" techniques exist, for the average operator, your DJI drone is highly visible to any agency with the right receiver, making it nearly impossible to fly undetected in restricted airspaces.