The Internet of Things blockchain can avoid drone collisions and enable flying cars
To avoid collisions with drones, flying cars and drones can be connected to the Internet of Things IoT and use information from positioning systems like Galileo and GPS. For VFR this would be sufficient to avoid collision accidents. The IoT is not always fault-tolerant, although it can be given sufficient resources to run critical applications like these, it is still possible that there will be outages of the network. Security breaches can even lead to hacks and viruses can lead to malfunctioning of critical applications. Next generation technologies like blockchain and IoT, can offer a more secure environment to manage these location data. On the other hand VFR is, in its core version, exactly meant for flying without the help of "connected" instruments. In cases the IoT experiences outages or security attacks, the flying car can just disconnect from the network and land at the closest airfield. If we would however deal with self-flying cars, not VFR, these network problems would be an issue. Indeed, the idea of self-flying cars is interesting for the mass-adoption of flying cars: no special pilot trainings would have to be taken, these trainings are seen as a roadblock for mass-adoption. We consider also that self-flying cars use the IoT, positioning systems and software, to achieve the self-flying character itself, meaning they are not using IFR. When IoT outages or hacks occur and in the situation of a self-flying car, the car can be landed safely, in a non-populated area, with the ballistic recovery system. So this would actually be safer than self-driving cars on highways.
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