DJI AirSense is a tool for alerting users of nearby aircraft with ADS-B Out installed, but it does have some technical limitations. AirSense receives information broadcast from 1090ES (RTCA DO-260B) and UAT (RTCA DO-282B), but for aircraft with malfunctioning transmitters, or no ADS-B Out, AirSense cannot receive broadcast messages and will be unable to send out warnings. AirSense may also be unable to receive ADS-B information when there are large structures or obstacles between the DJI aircraft and the passenger aircraft, or if the DJI aircraft cannot accurately determine its own location during flight.
It should be noted that ADS-B Out transmissions are not only broadcast from passenger aircraft, they can also come from air traffic control and ground stations, who collect and broadcast ADS-B information to give nearby aircraft the clearest understanding of the surrounding airspace. While DJI AirSense is a powerful tool that can increase flight safety, operators are ultimately responsible for flying with caution and keenly observing their surroundings during flight.