Dodge drone crashes with the Phantom 4 from DJI, which includes a collision avoidance system that uses two forward-facing sensors to detect obstacles as far as 49 feet ahead. When the drone detects an object in its path, it will go around it or pause and hover. The quadcopter also features the Tap Fly functionality: if the human pilot taps on a specific object via the smartphone app, the drone will fly toward it.