Drone can be traced by

 There are several ways that drones can be traced or tracked:

• GPS: Most drones are equipped with GPS (Global Positioning System) technology, which allows them to be tracked in real-time. GPS is a satellite-based navigation system that provides location and time information.

• Radio Frequency (RF) Tracking: Some drones use RF technology to transmit their location and other data back to a ground-based receiver. RF tracking can be used to locate the drone even if it is out of range of the GPS system.

• Radio Frequency Identification (RFID) Tracking: Some drones use RFID technology to transmit their location and other data to a ground-based reader. RFID tags are small, inexpensive devices that can be attached to drones and used to track their location and other information.

• Automatic Dependent Surveillance-Broadcast (ADS-B): Some drones are equipped with ADS-B technology, which allows them to transmit their location and other data to ground-based receivers. ADS-B is a surveillance technology that is used by many aircraft to enhance safety and efficiency.

• Visual Tracking: In some cases, drones can be tracked visually by an observer on the ground. This can be useful in situations where the drone is within line of sight and is visible to the observer.

It's important to note that the effectiveness of these tracking methods may vary depending on the specific drone and the environment in which it is flying. Some tracking methods may not be effective in certain conditions or may be disrupted by interference.