Where are you actually standing when you're controlling the drone?
That was the biggest challenge for us to figure out. It took us a year. The problem is the distance. With an FPV drone (FPV = First-Person-View), I see what the drone sees in the display of my VR glasses (VR = Virtual Reality). But for that to work, the goggles and drone need a constant line of sight. If I lose the line of sight, then no more images show in my VR goggles and I lose the drone as well. So, it depends a lot on the terrain. It's most comfortable and safe for me to control the drone from the valley, but for some flights, that doesn't work, and then I'm standing on the edge of a cliff with my VR goggles as a 600-meter abyss opens up in front of me.