The Elios system uses several DJI components highlighted in the figure above. Their function is described below:
- The DJI Lightbridge 2 Air Unit, the transmission system on board the drone, allowing a bidirectional communication link with the aircraft.
- The DJI Lightbridge 2 Ground Unit, the hand held transmission system and controller. It communicates to the tablet to display the live video feed and is used by the pilot to control the aircraft.
- The DJI Mobile SDK, this Android library is allows the Cockpit application on the tablet to communicate to the remote controller.
- In all these components, the only capable of sending data over the internet is the DJI Mobile SDK. However, this is only possible if an Android device hosting the application (in your case the Samsung tablet) would have to be connected to a WiFi internet enabled network. In summary, the tablet is the only access point to the internet.
The Elios system can currently be operated 100% offline at all times. Flying Elios and updating the different firmware and software do not require any internet connection, as updates can be performed with an SD-card.
As long as the user does not manually connect to a WiFi network, there is no physical link between the Elios system and the internet, thus completely ensuring data safety. A clear policy communicated to users not to enable Wifi on the tablet to users is the first step.